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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A

12th Standard English Medium Computer Science Subject Strings and String Manipulations Book Back 2 Mark Questions with Solution updated Book back Questions

Published on: 13/05/2022

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Std: 12th Standard - Computer Science

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Questions:

Generic 2

5 x 2 = 10

What is slicing?

What will be the output of the following python code?
str1 = “School”
print(str1*3)

How will you delete a string in Python?

Do you modify a string in Python?

What is String?

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Answers Key:

Generic 2

5 x 2 = 10

(i) Slice is a substring of a main string. A substring can be taken from the original string by using [ ]. operator and index or subscript values.
(ii) Thus, [ ] is also known as slicing operator.Using slice operator, you have to slice one or more substrings from a main string.
General format of slice operation :
Str [start : end]

Output : School School School

Python will not allow deleting a particular character in a string. Whereas you can remove entire string variable using del command.
Example :
>>> strl="How about you"
>>> print (str1)
How about you
>>> del str1
>>> print (str1)
Traceback (most recent call last):
File "", line 1, in
print (strl)
NameError : name 'str1' is not defined

Strings in python are immutable. That means, once you define a string moditications or deletion is not allowed. However, we can replace the existing string entirely with the new string.

(i) String is a data type in python, which is used to handle array of characters.
(ii) String is a sequence of Unicode characters that may be a combination of letters, numbers, or special symbols enclosed within single, double or even triple quotes.
(iii) Example :
Welcome to learning Python"
"Welcome to learning Python"
""Welcome to learning Python""