Python String Methods

These methods are defined for all instances of the built-in str type.

Contents

Python String Methods

Capitalize

str.capitalize()

CaseFold

The casefold method casefolds the string to lowercase letters.

Non-ASCII characters may be irreversibly replaced with ASCII 'equivalents'.

orig = ['ß', 'á', 'Á']
[o.casefold() for o in orig]  # ['ss', 'á', 'á']

Center

str.center(width[, fillchar])

Count

str.count(sub[, start[, end]])

Encode

str.encode(encoding='utf-8', errors='strict')

EndsWith

str.endswith(suffix[, start[, end]])

ExpandTabs

str.expandtabs(tabsize=8)

Find

str.find(sub[, start[, end]])

Format

str.format(*args, **kwargs)

Format_Map

str.format_map(mapping)

Index

str.index(sub[, start[, end]])

IsAlnum

str.isalnum()

IsAlpha

str.isalpha()

IsASCII

str.isascii()

IsDecimal

str.isdecimal()

IsDigit

str.isdigit()

IsIdentifier

str.isidentifier()

IsLower

str.islower()

IsNumeric

str.isnumeric()

IsPrintable

str.isprintable()

IsSpace

str.isspace()

IsTitle

str.istitle()

IsUpper

str.isupper()

Join

str.join(iterable)

LJust

str.ljust(width[, fillchar])

Lower

The lower method casefolds the string to lowercase letters.

Unlike the casefold and upper methods, non-ASCII characters are preserved losslessly.

orig = ['ß', 'á', 'Á']
[o.lower() for o in orig]     # ['ß', 'á', 'á']

LStrip

str.lstrip([chars])

MakeTrans

str.maketrans(x[, y[, z]])

Partition

str.partition(sep)

RemovePrefix

str.removeprefix(prefix, /)

RemoveSuffix

str.removesuffix(suffix, /)

Replace

str.replace(old, new[, count])

RFind

str.rfind(sub[, start[, end]])

RIndex

str.rindex(sub[, start[, end]])

RJust

str.rjust(width[, fillchar])

RPartition

str.rpartition(sep)

RStrip

str.rstrip([chars])

Split

str.split(sep=None, maxsplit=-1)

SplitLines

str.splitlines(keepends=False)

StartsWith

str.startswith(prefix[, start[, end]])

Strip

str.strip([chars])

SwapCase

str.swapcase()

Title

str.title()

Translate

str.translate(table)

Upper

The upper method casefolds the string to uppercase letters.