Python methods cheat sheet

Python list methods

append(item)

>>> lst = [1, 2, 2]
>>> lst.append(4)
[1, 2, 2, 4]

count(item)

>>> lst.count(2)
2

extend(list)

>>> lst.extend([5, 6])
[1, 2, 2, 4, 5, 6]

index(item)

>>> lst.index(5)
4

insert(position, item)

>>>lst.insert(1, 9)
[1, 9, 2, 2, 3, 5, 6]

sort()

>>> lst.sort()
[1, 2, 2, 3, 5, 6, 9]

pop(index)

>>> lst.pop()
9

reverse()

>>> lst.reverse()
[6, 5, 3, 2, 1, 1]

Python string methods

>>> s = 'Hello2Python'

count(sub, start, end)

>>> s.count('l', 1, 5)
2

find(sub, start, end)

>>> s.find('l', 0, 5)
2

index(sub, start, end)

>>> s.index('t', 0, 9)
8

isalnum()

>>> s.isalnum()
True

isalpha()

>>> s.isalpha()
False

isdigit()

>>> s.isdigit()
False

islower()

>>> s.islower()
False

isupper()

>>> s.isupper()
False

isspace()

>>> s.isspace()
False

join()

>>> s.join('___')
'_Hello2Python_Hello2Python_Hello2Python_'

lower()

>>> s.lower()
hello2python

partition(sep)

>>> s.partition('2')
('Hello', '2', 'Python')

split(sep)

>>> s.split('2')
['Hello',  'Python']

strip()

>>> s.strip('n')
'Hello2Pytho'

upper()

>>> s.upper()
'HELLO2PYTHON'

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