A quick reference to Python string methods – Cases

A quick reference to Python string methods (3 Part Series)

1 A quick reference to Python string methods – Find and Replace
2 A quick reference to Python string methods – Cases
3 A quick reference to Python string methods – Splitting and Slicing

Cases

capitalize()

Parameters

string.capitalize()

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capitalize() takes no parameters.

Return value

Returns a copy of the string with the first letter of the first word capitalized and all the other characters of thestring in lowercase.

Example

Python 3.7.4

>>> s = "soMe peopLe AcTUally tyPE Like thIs."

>>> s.capitalize()
'Some people actually type like this.'

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title()

Parameters

string.title()

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title() takes no parameters.

Return value

Returns a copy of the string with the first letter of each word capitalized and all the other characters of thestring in lowercase.

Example

Python 3.7.4

>>> s = "soMe peopLe AcTUally tyPE Like thIs."

>>> s.title()
'Some People Actually Type Like This.'

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swapcase()

Parameters

string.swapcase()

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swapcase() takes no parameters.

Return value

Returns a copy of the string with all uppercase characters swapped to lowercase and lowercasecharacters swapped to uppercase.

Example

Python 3.7.4

>>> s = "soMe peopLe AcTUally tyPE Like thIs."

>>> s.swapcase()
'SOmE PEOPlE aCtuALLY TYpe lIKE THiS.'

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upper()

Parameters

string.upper()

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upper() takes no parameters.

Return value

Returns a copy of the string with all characters in uppercase.

Example

Python 3.7.4

>>> s = "soMe peopLe AcTUally tyPE Like thIs."

>>> s.upper()
'SOME PEOPLE ACTUALLY TYPE LIKE THIS.'

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lower()

Parameters

string.lower()

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lower() takes no parameters.

Return value

Returns a copy of the string with all characters in lowercase.

Example

Python 3.7.4

>>> s = "soMe peopLe AcTUally tyPE Like thIs."

>>> s.lower()
'some people actually type like this.'

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A quick reference to Python string methods (3 Part Series)

1 A quick reference to Python string methods – Find and Replace
2 A quick reference to Python string methods – Cases
3 A quick reference to Python string methods – Splitting and Slicing

原文链接：A quick reference to Python string methods – Cases