Page 361 - Computer Science V2.0 Class 11

● s.join(list): Joins the strings in the given list (comma-separated sequence of values provided within square
brackets) together using the string s as the delimiter. For example,
>>> '>>'.join(['a', 'b', 'c', 'd'])
'a>>b>>c>>d'
The strings in the list ['a', 'b', 'c', 'd'] are joined together using '>>' as the delimiter.
Next, let us consider an example that uses a space as the delimiter to print the concatenated string that spreads over
multiple lines.

>>> ' '.join(['Hello', '\tHow', 'are', 'you?\n', 'I', 'am', 'fine.\n', 'How', 'are', 'you?'])
'Hello \tHow are you?\n I am fine.\n How are you?'

>>> print(' '.join(['Hello', '\tHow', 'are', 'you?\n', 'I', 'am', 'fine.\n', 'How', 'are',
'you?']))
Hello How are you?
I am fine.
How are you?

Write the names of the functions that will be used to perform the following tasks:
(i) To convert a string to uppercase.
(ii) To find the length of a string.
(iii) To check whether a string consists of digit(s).
(iv) To return a list of words from the string.
(v) To display the index of a character in a string.
(vi) To replace the character in a string with a new character.
(vii) To return a string with the first character of each word capitalized.
(viii) To remove the leading spaces from a string.

The built-in functions for string manipulations are summarized in the following table:
Table 12.1: Built-in functions for string manipulations

Method Description Example

len(string) Returns the length of a string >>> string_s1= 'Touchpad
Computer Science'
>>> len(string_s1)

25
str.count(string) Returns the number of occurrences of >>> string_s1.count('c')
the string, passed as the argument to 3
the method count().

str.lower() Returns the lowercase version of the >>> string_s1.lower()
string. touchpad computer science

str.upper() Returns the uppercase version of the >>> string_s1.upper()
string. TOUCHPAD COMPUTER SCIENCE

str.title() Returns a string that has the first >>> string_s1.title()
letter of every word of the original Touchpad Computer Science
string converted to uppercase, while
remaining letters are converted to
lowercase.

Strings 347