Python Language String: Difference between revisions
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The <code>[]</code> operator can be used to read strings from the sequence, but not modify the sequence. Because strings are immutable, an attempt to change a character at a specific position in string will throw an <code>TypeError</code> exception: | <span id='String_Immutability'></span>The <code>[]</code> operator can be used to read strings from the sequence, but not modify the sequence. Because strings are immutable, an attempt to change a character at a specific position in string will throw an <code>TypeError</code> exception: | ||
<syntaxhighlight lang='py'> | <syntaxhighlight lang='py'> | ||
s = 'abc' | s = 'abc' | ||
Revision as of 19:07, 18 June 2022
Internal
Overview
String are a Python sequence of characters. Strings are immutable, a string cannot be changed in-place. Python 3 supports the Unicode standard, so Python 3 strings can contain characters from any written language in the world.
The [] Operator and String Slices
The [] operator can be used to read strings from the sequence, but not modify the sequence. Because strings are immutable, an attempt to change a character at a specific position in string will throw an TypeError exception:
s = 'abc'
s[0] = 'x'
[...]
TypeError: 'str' object does not support item assignment