String Methods

Syntax

• str.capitalize() -> str
• str.casefold() -> str [only for Python > 3.3]
• str.center(width[, fillchar]) -> str
• str.count(sub[, start[, end]]) -> int
• str.decode(encoding=“utf-8”[, errors]) -> unicode [only in Python 2.x]
• str.encode(encoding=“utf-8”, errors=“strict”) -> bytes
• str.endswith(suffix[, start[, end]]) -> bool
• str.expandtabs(tabsize=8) -> str
• str.find(sub[, start[, end]]) -> int
• str.format(*args, **kwargs) -> str
• str.format_map(mapping) -> str
• str.index(sub[, start[, end]]) -> int
• str.isalnum() -> bool
• str.isalpha() -> bool
• str.isdecimal() -> bool
• str.isdigit() -> bool
• str.isidentifier() -> bool
• str.islower() -> bool
• str.isnumeric() -> bool
• str.isprintable() -> bool
• str.isspace() -> bool
• str.istitle() -> bool
• str.isupper() -> bool
• str.join(iterable) -> str
• str.ljust(width[, fillchar]) -> str
• str.lower() -> str
• str.lstrip([chars]) -> str
• static str.maketrans(x[, y[, z]])
• str.partition(sep) -> (head, sep, tail)
• str.replace(old, new[, count]) -> str
• str.rfind(sub[, start[, end]]) -> int
• str.rindex(sub[, start[, end]]) -> int
• str.rjust(width[, fillchar]) -> str
• str.rpartition(sep) -> (head, sep, tail)
• str.rsplit(sep=None, maxsplit=-1) -> list of strings
• str.rstrip([chars]) -> str
• str.split(sep=None, maxsplit=-1) -> list of strings
• str.splitlines([keepends]) -> list of strings
• str.startswith(prefix[, start[, end]]) -> book
• str.strip([chars]) -> str
• str.swapcase() -> str
• str.title() -> str
• str.translate(table) -> str
• str.upper() -> str
• str.zfill(width) -> str

Remarks

String objects are immutable, meaning that they can’t be modified in place the way a list can. Because of this, methods on the built-in type str always return a new str object, which contains the result of the method call.