Q: Question 4Carefully go through the code given below and answer the questions based on it :testStr = "abcdefghi" inputStr = input ("Enter integer:") inputlnt = int(inputStr) count = 2 newStr = '' while count <= inputlnt : newStr = newStr + testStr[0 : count] testStr = testStr[2:] #Line 1 count = count + 1 print (newStr) # Line 2 print (testStr) # Line 3 print (count) # Line 4 print (inputlnt) # Line 5 (i) Given the input integer 4, what output is produced by Line 2?abcdefgaabbccddeeffggabcdeefghghiNone of these

Option 3 — abcdeefghExplanationInput integer is 4 so while loop will execute 3 times for values of count as 2, 3, 4.1st Iteration newStr = newStr + testStr[0:2]⇒ newStr = '' + ab⇒ newStr = ab testStr = testStr[2:]⇒ testStr = cdefghi2nd Iteration newStr = newStr + testStr[0:3]⇒ newStr = ab + cde⇒ newStr = abcde testStr = testStr[2:]⇒ testStr = efghi3rd Iteration newStr = newStr + testStr[0:4]⇒ newStr = abcde + efgh⇒ newStr = abcdeefgh testStr = testStr[2:]⇒ testStr = ghi(ii) Given the input integer 4, what output is produced by Line 3?abcdefgaabbccddeeffggabcdeefghghiNone of theseAnswerOption 4 — ghiExplanationInput integer is 4 so while loop will execute 3 times for values of count as 2, 3, 4.1st Iteration testStr = testStr[2:]⇒ testStr = cdefghi2nd Iteration testStr = testStr[2:]⇒ testStr = efghi3rd Iteration testStr = testStr[2:]⇒ testStr = ghi(iii) Given the input integer 3, what output is produced by Line 4?0123None of theseAnswerOption 5 — None of theseExplanationLooking at the condition of while loop — while count <= inputlnt, the while loop will stop executing when count becomes greater than inputlnt. Value of inputlnt is 3 so when loop stops executing count will be 4.(iv) Given the input integer 3, what output is produced by Line 5?0123None of theseAnswerOption 4 — 3ExplanationThe input is converted from string to integer and after that its value is unchanged in the code so line 5 prints the input integer 3.(v) Which statement is equivalent to the statement found in Line 1?testStr = testStr[2:0]testStr = testStr[2:-1]testStr = testStr[2:-2]testStr = testStr - 2None of theseAnswerOption 5 — None of these

Q: Question 5Carefully go through the code given below and answer the questions based on it :inputStr = input(" Give me a string:") biglnt = 0 littlelnt = 0 otherlnt = 0 for ele in inputStr: if ele >= 'a' and ele <= 'm': # Line 1 littlelnt = littlelnt + 1 elif ele > 'm' and ele <= 'z': biglnt = biglnt + 1 else: otherlnt = otherlnt + 1 print (biglnt) # Line 2 print (littlelnt) # Line 3 print (otherlnt) # Line 4 print (inputStr.isdigit()) # Line 5(i) Given the input abcd what output is produced by Line 2?01234

Option 1 — 0ExplanationIn the input abcd, all the letters are between a and m so the condition — if ele >= 'a' and ele <= 'm' is always true. Hence, biglnt is 0.(ii) Given the input Hi Mom what output is produced by Line 3?0123None of theseAnswerOption 3 — 2ExplanationIn the input Hi Mom, only two letters i and m satisfy the condition — if ele >= 'a' and ele <= 'm'. Hence, value of littlelnt is 2.(iii) Given the input Hi Mom what output is produced by Line 4?0123None of theseAnswerOption 4 — 3ExplanationIn the input Hi Mom, 3 characters H, M and space are not between a and z. So for these 3 characters the statement in else part — otherlnt = otherlnt + 1 is executed. Hence, value of otherlnt is 3.(iv) Given the input 1+2 =3 what output is produced by Line 5?01TrueFalseNone of theseAnswerOption 4 — FalseExplanationAs all characters in the input string 1+2 =3 are not digits hence isdigit() returns False.(v) Give the input Hi Mom, what changes result from modifying Line 1 fromif ele >= 'a' and ele <='m' to the expressionif ele >= 'a' and ele < 'm'?No changeotherlnt would be largerlittlelnt would be largerbiglnt would be largerNone of theseAnswerOption 2 — otherlnt would be largerExplanationFor letter m, now else case will be executed increasing the value of otherlnt.

Question 1

Question 1Write a Python script that traverses through an input string and prints its characters in different lines — two characters per line.

Accepted Answer

str = input("Enter the string: ")
length = len(str)
for a in range(0, length, 2):
    print(str[a:a+2])OutputEnter the string: KnowledgeBoat
Kn
ow
le
dg
eB
oa
t

Question 2

Question 5Can you say strings are character lists? Why? Why not?

Accepted Answer

Strings are sequence of characters where each character has a unique index. This implies that strings are iterable like lists but unlike lists they are immutable so they cannot be modified at runtime. Therefore, strings can't be considered as character lists. For example,str = 'cat'
# The below statement
# is INVALID as strings
# are immutable
str[0] = 'b'

# Considering character lists
strList = ['c', 'a', 't']
# The below statement
# is VALID as lists
# are mutable
strList[0] = 'b'

Question 3

Question 3Carefully go through the code given below and answer the questions based on it :theStr = " This is a test "         
inputStr = input(" Enter integer: ")
inputlnt = int(inputStr)            
testStr = theStr
while inputlnt >= 0 :               
    testStr = testStr[1:-1]        
    inputlnt = inputlnt - 1
testBool = 't' in testStr
print (theStr)             # Line 1 
print (testStr)            # Line 2 
print (inputlnt)           # Line 3 
print (testBool)           # Line 4 (i) Given the input integer 3, what output is produced by Line 1?This is a testThis is ais a testis aNone of these

Accepted Answer

Option 1 — This is a test(ii) Given the input integer 3, what output is produced by Line 2?This is a tests is a tis a testis aNone of theseAnswerOption 2 — s is a tExplanationAs input is 3 and inside the while loop, inputlnt decreases by 1 in each iteration so the while loop executes 4 times for inputlnt values 3, 2, 1, 0.1st IterationtestStr = "This is a test"2nd IterationtestStr = "his is a tes"3rd IterationtestStr = "is is a te"4th IterationtestStr = "s is a t"(iii) Given the input integer 2, what output is produced by Line 3?0123None of theseAnswerOption 5 — None of theseExplanationValue of inputlnt will be -1 as till inputlnt >= 0 the while loop will continue executing.(iv) Given the input integer 2, what output is produced by Line 4?FalseTrue01None of theseAnswerOption 2 — TrueExplanationAs input is 2 and inside the while loop, inputlnt decreases by 1 in each iteration so the while loop executes 3 times for inputlnt values 2, 1, 0.1st IterationtestStr = "This is a test"2nd IterationtestStr = "his is a tes"3rd IterationtestStr = "is is a te"After the while loop finishes executing, value of testStr is "is is a te". 't' in testStr returns True as letter t is present in testStr.

Question 4

Question 4Carefully go through the code given below and answer the questions based on it :testStr = "abcdefghi"                    
inputStr = input ("Enter integer:")      
inputlnt = int(inputStr)                 
count = 2                                
newStr = ''                               
while count <= inputlnt :                
    newStr = newStr + testStr[0 : count]
    testStr = testStr[2:]      #Line 1   
    count = count + 1                    
print (newStr)                 # Line 2
print (testStr)                # Line 3  
print (count)                  # Line 4  
print (inputlnt)               # Line 5  (i) Given the input integer 4, what output is produced by Line 2?abcdefgaabbccddeeffggabcdeefghghiNone of these

Accepted Answer

Option 3 — abcdeefghExplanationInput integer is 4 so while loop will execute 3 times for values of count as 2, 3, 4.1st Iteration    newStr = newStr + testStr[0:2]⇒ newStr = '' + ab⇒ newStr = ab    testStr = testStr[2:]⇒ testStr = cdefghi2nd Iteration    newStr = newStr + testStr[0:3]⇒ newStr = ab + cde⇒ newStr = abcde    testStr = testStr[2:]⇒ testStr = efghi3rd Iteration    newStr = newStr + testStr[0:4]⇒ newStr = abcde + efgh⇒ newStr = abcdeefgh    testStr = testStr[2:]⇒ testStr = ghi(ii) Given the input integer 4, what output is produced by Line 3?abcdefgaabbccddeeffggabcdeefghghiNone of theseAnswerOption 4 — ghiExplanationInput integer is 4 so while loop will execute 3 times for values of count as 2, 3, 4.1st Iteration    testStr = testStr[2:]⇒ testStr = cdefghi2nd Iteration    testStr = testStr[2:]⇒ testStr = efghi3rd Iteration    testStr = testStr[2:]⇒ testStr = ghi(iii) Given the input integer 3, what output is produced by Line 4?0123None of theseAnswerOption 5 — None of theseExplanationLooking at the condition of while loop — while count <= inputlnt, the while loop will stop executing when count becomes greater than inputlnt. Value of inputlnt is 3 so when loop stops executing count will be 4.(iv) Given the input integer 3, what output is produced by Line 5?0123None of theseAnswerOption 4 — 3ExplanationThe input is converted from string to integer and after that its value is unchanged in the code so line 5 prints the input integer 3.(v) Which statement is equivalent to the statement found in Line 1?testStr = testStr[2:0]testStr = testStr[2:-1]testStr = testStr[2:-2]testStr = testStr - 2None of theseAnswerOption 5 — None of these

Question 5

Question 5Carefully go through the code given below and answer the questions based on it :inputStr = input(" Give me a string:") biglnt = 0 littlelnt = 0 otherlnt = 0 for ele in inputStr: if ele >= 'a' and ele <= 'm': # Line 1 littlelnt = littlelnt + 1 elif ele > 'm' and ele <= 'z': biglnt = biglnt + 1 else: otherlnt = otherlnt + 1 print (biglnt) # Line 2 print (littlelnt) # Line 3 print (otherlnt) # Line 4 print (inputStr.isdigit()) # Line 5(i) Given the input abcd what output is produced by Line 2?01234

Accepted Answer

Option 1 — 0ExplanationIn the input abcd, all the letters are between a and m so the condition — if ele >= 'a' and ele <= 'm' is always true. Hence, biglnt is 0.(ii) Given the input Hi Mom what output is produced by Line 3?0123None of theseAnswerOption 3 — 2ExplanationIn the input Hi Mom, only two letters i and m satisfy the condition — if ele >= 'a' and ele <= 'm'. Hence, value of littlelnt is 2.(iii) Given the input Hi Mom what output is produced by Line 4?0123None of theseAnswerOption 4 — 3ExplanationIn the input Hi Mom, 3 characters H, M and space are not between a and z. So for these 3 characters the statement in else part — otherlnt = otherlnt + 1 is executed. Hence, value of otherlnt is 3.(iv) Given the input 1+2 =3 what output is produced by Line 5?01TrueFalseNone of theseAnswerOption 4 — FalseExplanationAs all characters in the input string 1+2 =3 are not digits hence isdigit() returns False.(v) Give the input Hi Mom, what changes result from modifying Line 1 fromif ele >= 'a' and ele <='m' to the expressionif ele >= 'a' and ele < 'm'?No changeotherlnt would be largerlittlelnt would be largerbiglnt would be largerNone of theseAnswerOption 2 — otherlnt would be largerExplanationFor letter m, now else case will be executed increasing the value of otherlnt.

Question 6

Question 6Carefully go through the code given below and answer the questions based on it :in1Str = input(" Enter string of digits: ")
in2Str = input(" Enter string of digits: ")

if len(in1Str)>len(in2Str):
    small = in2Str
    large = in1Str
else:
    small = in1Str
    large = in2Str
newStr = ''
for element in small:
    result = int(element) + int(large[0])
    newStr = newStr + str(result)
    large = large[1:]
print (len(newStr))      # Line 1
print (newStr)           # Line 2
print (large)            # Line 3
print (small)            # Line 4(i) Given a first input of 12345 and a second input of 246, what result is produced by Line 1?1350None of these

Accepted Answer

Option 2 — 3ExplanationAs length of smaller input is 3, for loop executes 3 times so 3 characters are added to newStr. Hence, length of newStr is 3.(ii) Given a first input of 12345 and a second input of 246, what result is produced by Line 2?369246234345None of theseAnswerOption 1 — 369ExplanationFor loop executes 3 times as length of smaller input is 3.1st Iteration    result = 2 + 1⇒ result = 3    newStr = '' + '3'⇒ newStr = '3'    large = 23452nd Iteration    result = 4 + 2⇒ result = 6    newStr = '3' + '6'⇒ newStr = '36'    large = 3453rd Iteration    result = 6 + 3⇒ result = 9    newStr = '36' + '9'⇒ newStr = '369'    large = 45Final value of newStr is '369'.(iii) Given a first input of 123 and a second input of 4567, what result is produced by Line 3?371245None of theseAnswerOption 2 — 7ExplanationFor loop executes 3 times as length of smaller input is 3. Initial value of large is 4567.1st Iteration    large = large[1:]⇒ large = 5672nd Iteration     large = large[1:]⇒ large = 673rd Iteration     large = large[1:]⇒ large = 7(iv) Given a first input of 123 and a second input of 4567, what result is produced by Line 4?123456773None of theseAnswerOption 1 — 123ExplanationAs length of 123 is less than length of 4567 so 123 is assigned to variable small and gets printed in line 4.

Question 7

Question 7aFind the output if the input string is 'Test'.S = input("Enter String :")
RS = " "
for ch in S :
    RS = ch + RS
print(S + RS)

Accepted Answer

OutputTesttseT
ExplanationThe for loop reverses the input string and stores the reversed string in variable RS. After that original string and reversed string are concatenated and printed.

Question 8

Question 8bFind the errors. Find the line numbers causing errors.S = "PURA VIDA"S1 = S[: 10] +S[10 :]S2 = S[10] + S[-10]

Accepted Answer

The error is in line 3. Length of string S is 9 so its forward indexes range for 0 to 8 and backwards indexes range from -1 to -9. S[10] and S[-10] are trying to access out of bound indexes.

Source: This question is from String Manipulation, Computer Science &mdash; Class 11, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter String Manipulation: Question, Errors, Line, Numbers, Causing, Pura. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 11 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from String ManipulationQ1: Question 1 Write a Python script that traverses through an input string and prints its characters...
Q10: Question 4 Carefully go through the code given below and answer the questions based on it : testStr...
Q11: Question 5 Carefully go through the code given below and answer the questions based on it :...
Q12: Question 6 Carefully go through the code given below and answer the questions based on it : in1Str...
Q13: Question 7a Find the output if the input string is &#x27;Test&#x27;. S = input ( "Enter String :" ) RS = " "...
Practice more questions from String Manipulation &mdash; Computer Science, Class 11 CBSE

Question 9

Question 8cFind the errors. Find the line numbers causing errors.S = "PURA VIDA"S1 = S * 2S2 = S1[-19] + S1[-20]S3 = S1[-19 :]

Accepted Answer

The error is in line 3. S1[-19] and S1[-20] are trying to access out of bound indexes.

Source: This question is from String Manipulation, Computer Science &mdash; Class 11, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter String Manipulation: Question, Errors, Line, Numbers, Causing, Pura. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 11 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from String ManipulationQ1: Question 1 Write a Python script that traverses through an input string and prints its characters...
Q10: Question 4 Carefully go through the code given below and answer the questions based on it : testStr...
Q11: Question 5 Carefully go through the code given below and answer the questions based on it :...
Q12: Question 6 Carefully go through the code given below and answer the questions based on it : in1Str...
Q13: Question 7a Find the output if the input string is &#x27;Test&#x27;. S = input ( "Enter String :" ) RS = " "...
Practice more questions from String Manipulation &mdash; Computer Science, Class 11 CBSE

Question 10

Question 8dFind the errors. Find the line numbers causing errors.S = "PURA VIDA"S1 = S[: 5]S2 = S[5 :]S3 = S1 * S2S4 = S2 + '3'S5 = S1 + 3

Accepted Answer

The errors are in line 4 and line 6. Two strings cannot be multiplied. A string and an integer cannot be added.

Source: This question is from String Manipulation, Computer Science &mdash; Class 11, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter String Manipulation: Question, Errors, Line, Numbers, Causing, Pura. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 11 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from String ManipulationQ1: Question 1 Write a Python script that traverses through an input string and prints its characters...
Q10: Question 4 Carefully go through the code given below and answer the questions based on it : testStr...
Q11: Question 5 Carefully go through the code given below and answer the questions based on it :...
Q12: Question 6 Carefully go through the code given below and answer the questions based on it : in1Str...
Q13: Question 7a Find the output if the input string is &#x27;Test&#x27;. S = input ( "Enter String :" ) RS = " "...
Practice more questions from String Manipulation &mdash; Computer Science, Class 11 CBSE

Question 11

Question 9What is the output produced?(i) >>> "whenever" .find("never")(ii) >>> "whenever" .find("what")

Accepted Answer

(i) 3The starting index of substring "never" in "whenever" is 3.(ii) -1Substring "what" is not present in "whenever".

Source: This question is from String Manipulation, Computer Science &mdash; Class 11, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter String Manipulation: Question, Output, Produced, Whenever, String Manipulation, Computer Science. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 11 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from String ManipulationQ1: Question 1 Write a Python script that traverses through an input string and prints its characters...
Q10: Question 4 Carefully go through the code given below and answer the questions based on it : testStr...
Q11: Question 5 Carefully go through the code given below and answer the questions based on it :...
Q12: Question 6 Carefully go through the code given below and answer the questions based on it : in1Str...
Q13: Question 7a Find the output if the input string is &#x27;Test&#x27;. S = input ( "Enter String :" ) RS = " "...
Practice more questions from String Manipulation &mdash; Computer Science, Class 11 CBSE

Question 12

Question 10What is the output produced?(i) >>> "-".join(['123','365','1319'])(ii) >>> " ".join(['Python', 'is', 'fun'])

Accepted Answer

(i) '123-365-1319'(ii) 'Python is fun'

Source: This question is from String Manipulation, Computer Science &mdash; Class 11, CBSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter String Manipulation: Question, Output, Produced, Join, Python, Fun. These are fundamental topics in Computer Science that students are expected to master as part of the CBSE Class 11 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your CBSE examinations. These topics are frequently tested in both objective and subjective sections of Computer Science papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach This QuestionRead the question carefully and identify what is being asked. Break down complex questions into smaller parts. Use the terminology and concepts discussed in this chapter. Structure your answer logically — begin with a definition or key statement, then provide supporting details. Review your answer to ensure it addresses all parts of the question completely.
Key Points to RememberWrite programs with proper indentation and comments.
Trace through your code with sample inputs to verify correctness.
Explain the logic behind each step of your solution.
Familiarise yourself with common library functions and methods.
Related Questions from String ManipulationQ1: Question 1 Write a Python script that traverses through an input string and prints its characters...
Q10: Question 4 Carefully go through the code given below and answer the questions based on it : testStr...
Q11: Question 5 Carefully go through the code given below and answer the questions based on it :...
Q12: Question 6 Carefully go through the code given below and answer the questions based on it : in1Str...
Q13: Question 7a Find the output if the input string is &#x27;Test&#x27;. S = input ( "Enter String :" ) RS = " "...
Practice more questions from String Manipulation &mdash; Computer Science, Class 11 CBSE

Question 13

Question 11Given a string S, write expressions to printfirst five characters of SNinth character of Sreversed Salternate characters from reversed S

Accepted Answer

print(S[:5])print(S[8])for a in range(-1, (-len(S) - 1), -1) :      print(S[a], end = '')for a in range(-1, (-len(S) - 1), -2) :      print(S[a], end = '')

Question 14

Question 2Write a program which replaces all vowels in the string with '*'.Solutionstr = input("Enter the string: ")
newStr = ""
for ch in str : 
    lch = ch.lower()
    if lch == 'a' \
       or lch == 'e' \
       or lch == 'i' \
       or lch == 'o' \
       or lch == 'u' :
        newStr += '*'
    else :
        newStr += ch
print(newStr)OutputEnter the string: Computer Studies
C*mp*t*r St*d**s

Accepted Answer

str=input("Enter the string: ")newStr=""forchinstr:lch=ch.lower()iflch=='a'\orlch=='e'\orlch=='i'\orlch=='o'\orlch=='u':newStr+='*'else:newStr+=chprint(newStr)OutputEnter the string: Computer StudiesC*mp*t*r St*d**s

Question 15

Question 3Write a program which reverses a string and stores the reversed string in a new string.Solutionstr = input("Enter the string: ")
newStr = ""
for ch in str :
    newStr = ch + newStr
print(newStr)OutputEnter the string: computer studies
seiduts retupmoc

Accepted Answer

str=input("Enter the string: ")newStr=""forchinstr:newStr=ch+newStrprint(newStr)OutputEnter the string: computer studiesseiduts retupmoc

Question 16

Question 4Write a program that prompts for a phone number of 10 digits and two dashes, with dashes after the area code and the next three numbers. For example, 017-555-1212 is a legal input. Display if the phone number entered is valid format or not and display if the phone number is valid or not (i.e., contains just the digits and dash at specific places.)SolutionphNo = input("Enter the phone number: ")
length = len(phNo)
if length == 12 \
    and phNo[3] == "-" \
    and phNo[7] == "-" \
    and phNo[:3].isdigit() \
    and phNo[4:7].isdigit() \
    and phNo[8:].isdigit() :
    print("Valid Phone Number")
else :
    print("Invalid Phone Number")OutputEnter the phone number: 017-555-1212
Valid Phone Number

=====================================

Enter the phone number: 017-5A5-1212
Invalid Phone Number

Accepted Answer

phNo=input("Enter the phone number: ")length=len(phNo)iflength==12\andphNo[3]=="-"\andphNo[7]=="-"\andphNo[:3].isdigit() \andphNo[4:7].isdigit() \andphNo[8:].isdigit() :print("Valid Phone Number")else:print("Invalid Phone Number")OutputEnter the phone number: 017-555-1212Valid Phone Number=====================================Enter the phone number: 017-5A5-1212Invalid Phone Number

Question 17

Question 6Write a program that should prompt the user to type some sentence(s) followed by "enter". It should then print the original sentence(s) and the following statistics relating to the sentence(s) :Number of wordsNumber of characters (including white-space and punctuation)Percentage of characters that are alphanumericHintsAssume any consecutive sequence of non-blank characters is a word.Solutionstr = input("Enter a few sentences: ")
length = len(str)
spaceCount = 0
alnumCount = 0

for ch in str :
    if ch.isspace() :
        spaceCount += 1
    elif ch.isalnum() :
        alnumCount += 1

alnumPercent = alnumCount / length * 100

print("Original Sentences:")
print(str)

print("Number of words =", (spaceCount + 1))
print("Number of characters =", (length + 1))
print("Alphanumeric Percentage =", alnumPercent)OutputEnter a few sentences: Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. Its implementation began in December 1989. Python 3.0 was released on 3 December 2008.
Original Sentences:
Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. Its implementation began in December 1989. Python 3.0 was released on 3 December 2008.
Number of words = 34
Number of characters = 206
Alphanumeric Percentage = 80.48780487804879

Accepted Answer

str=input("Enter a few sentences: ")length=len(str)spaceCount=0alnumCount=0forchinstr:ifch.isspace() :spaceCount+=1elifch.isalnum() :alnumCount+=1alnumPercent=alnumCount/length*100print("Original Sentences:")print(str)print("Number of words =", (spaceCount+1))print("Number of characters =", (length+1))print("Alphanumeric Percentage =",alnumPercent)OutputEnter a few sentences: Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. Its implementation began in December 1989. Python 3.0 was released on 3 December 2008.Original Sentences:Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. Its implementation began in December 1989. Python 3.0 was released on 3 December 2008.Number of words = 34Number of characters = 206Alphanumeric Percentage = 80.48780487804879

Question 18

Question 7Write a Python program as per specifications given below:Repeatedly prompt for a sentence (string) or for 'q' to quit.Upon input of a sentence s, print the string produced from s by converting each lower case letter to upper case and each upper case letter to lower case.All other characters are left unchanged.For example,Please enter a sentence, or 'q' to quit : This is the Bomb!tHIS IS THE bOMB!Please enter a sentence, or 'q ' to quit : What's up Doc ???wHAT'S UP dOC ???Please enter a sentence, or 'q' to quit : qSolutionwhile True :
    str = input("Please enter a sentence, or 'q' to quit : ")
    newStr = ""
    if str.lower() == "q" :
        break
    for ch in str :
        if ch.islower() :
            newStr += ch.upper()
        elif ch.isupper() :
            newStr += ch.lower()
        else :
            newStr += ch
    print(newStr)OutputPlease enter a sentence, or 'q' to quit : This is the Bomb!
tHIS IS THE bOMB!
Please enter a sentence, or 'q' to quit : What's up Doc ???
wHAT'S UP dOC ???
Please enter a sentence, or 'q' to quit : q

Accepted Answer

whileTrue:str=input("Please enter a sentence, or 'q' to quit : ")newStr=""ifstr.lower()=="q":breakforchinstr:ifch.islower() :newStr+=ch.upper()elifch.isupper() :newStr+=ch.lower()else:newStr+=chprint(newStr)OutputPlease enter a sentence, or 'q' to quit : This is the Bomb!tHIS IS THE bOMB!Please enter a sentence, or 'q' to quit : What's up Doc ???wHAT'S UP dOC ???Please enter a sentence, or 'q' to quit : q

Question 19

Question 8Write a program that does the following :takes two inputs : the first, an integer and the second, a stringfrom the input string extract all the digits, in the order they occurred, from the string.if no digits occur, set the extracted digits to 0add the integer input and the digits extracted from the string together as integersprint a string of the form :"integer_input + string_digits = sum"For example :For inputs 12, 'abc123' → '12 + 123 = 135'For inputs 20, 'a5b6c7' → '20 + 567 =587'For inputs 100, 'hi mom' → '100 + 0 = 100'Solutionnum = int(input("Enter an integer: "))
str = input("Enter the string: ")

digitsStr = ''
digitsNum = 0;

for ch in str :
    if ch.isdigit() :
        digitsStr += ch

if digitsStr :
    digitsNum = int(digitsStr)

print(num, "+", digitsNum, "=", (num + digitsNum))OutputEnter an integer: 12
Enter the string: abc123
12 + 123 = 135

=====================================

Enter an integer: 20
Enter the string: a5b6c7
20 + 567 = 587

=====================================

Enter an integer: 100
Enter the string: hi mom
100 + 0 = 100

Accepted Answer

num=int(input("Enter an integer: "))str=input("Enter the string: ")digitsStr=''digitsNum=0;forchinstr:ifch.isdigit() :digitsStr+=chifdigitsStr:digitsNum=int(digitsStr)print(num,"+",digitsNum,"=", (num+digitsNum))OutputEnter an integer: 12Enter the string: abc12312 + 123 = 135=====================================Enter an integer: 20Enter the string: a5b6c720 + 567 = 587=====================================Enter an integer: 100Enter the string: hi mom100 + 0 = 100

Question 20

Question 14Write a program to input a line of text and print the biggest word (length wise) from it.Solutionstr = input("Enter a string: ")
words = str.split()
longWord = ''

for w in words :
    if len(w) > len(longWord) :
        longWord = w

print("Longest Word =", longWord)OutputEnter a string: TATA FOOTBALL ACADEMY WILL PLAY AGAINST MOHAN BAGAN
Longest Word = FOOTBALL

Accepted Answer

str=input("Enter a string: ")words=str.split()longWord=''forwinwords:iflen(w)>len(longWord) :longWord=wprint("Longest Word =",longWord)OutputEnter a string: TATA FOOTBALL ACADEMY WILL PLAY AGAINST MOHAN BAGANLongest Word = FOOTBALL

String Manipulation

Type A : Short Answer Questions/Conceptual Questions

Type B: Application Based Questions

Type C: Programming Practice/Knowledge based Questions