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Python Text Sequence Types
In python the str object, handles the text or string type data. Strings are immutable. The strings are sequence of Unicode characters. We can use single quote, double quotes or triple quotes to define the string literals.
- ‘This is a string with single quote’
- “Another Text with double quotes”
- ‘’’Text using three single quotes’’’ or “””Text using three double quotes”””
We can use triple quotes to assign multiline strings in python.
There is different string related functions. Some of the String methods are as follows −
| Sr.No. | Operation/Functions & Description |
|---|---|
| 1 | s.capitalize() Convert first character to capital letter |
| 2 | s.center(width[, fillchar]) Pad String with specified character. Default is ‘ ’ <space> |
| 3 | s.count(sub[, start[, end]]) Count number of occurrences in string |
| 4 | s.find(sub[, start[, end]]) Returns the first occurrence of substring in the text |
| 5 | s.format(*args, **kwargs) Format the string to generate nice output |
| 6 | s.isalnum() Check for alphanumeric characters |
| 7 | s.isalpha() Check whether all characters are alphabets |
| 8 | s.isdigit() Check digit characters |
| 9 | s.isspace() Checks whitespaces in the string |
| 10 | s.join(iterable) Concatenate strings |
| 11 | s.ljust(width[, fillchar]) Return the left justified string |
| 12 | s.rjust(width[, fillchar]) Return the right justified string |
| 13 | s.lower() Convert to lower case letters |
| 14 | s.split(sep=None, maxsplit=-1) Split the string with given separator |
| 15 | s.strip([chars]) Cut the characters from string |
| 16 | s.swapcase() Convert lowercase to uppercase and vice versa |
| 17 |
s.upper() Convert to uppercase letters |
| 18 | s.zfill(width) Convert the string by adding zeros with it. |
Example Code
myStr1 = 'This is a Python String'
myStr2 = "hello world"
print(myStr2)
print(myStr2.capitalize())
print(myStr2.center(len(myStr1)))
print(myStr1)
print(myStr1.find('Py')) #The location of substring Py.
myStr3 = 'abc123'
print(myStr3.isalnum())
print(myStr3.isdigit())
print('AB'.join('XY'))
print(myStr2.rjust(20, '_')) #Right justified string, filled with '_' character
print(myStr1.swapcase())
print('2509'.zfill(10)) #Fill 0s to make 10 character long string
Output
hello world
Hello world
hello world
This is a Python String
10
True
False
XABY
_________hello world
tHIS IS A pYTHON sTRING
0000002509
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