Class Special Methods

__new__(cls)
__init__(self, args)
__del__(self)
__repr__(self)
__str__(self)
__cmp__(self, other)
__index__(self)
__hash__(self)
__getattr__(self, name)
__getattribute__(self, name)
__setattr__(self, name, attr)
__delattr__(self, name)
__call__(self, args, kwargs)

String Methods

capitalize() 

*

 

center(width)

count(sub, start, end)

decode()
encode()
endswith(sub)
expandtabs()
find(sub, start, end)

index(sub, start, end)

isalnum() 

*

isalpha() 

*

isdigit() 

*

islower() 

*

isspace() 

*

istitle() 

*

isupper() 

*

join()
ljust(width)
lower() 

*

sys Variables

argv

builtin_module_names

byteorder
check_interval
exec_prefix
executable
exitfunc
modules
path
platform
stdin, stdout, stderr
version_info
winver

os Variables

altsep
curdir
defpath
devnull
extsep
linesep
name
pardir
pathsep
sep

Indexes and Slices (of a=[0,1,2,3,4,5])

len(a)
a[0]
a[5]
a[-1]
a[-2]
a[1:]
a[:5]
a[:-2]
a[1:3]
a[1:-1]
b=a[:]

6
0
5
5
4
[1,2,3,4,5]
[0,1,2,3,4]
[0,1,2,3]
[1,2]
[1,2,3,4]
Shallow copy of a

Date Formatting (strftime and strptime)

%a

%A
%b
%B

%c

%d

%H

%I

%j

%m

%M

%p
%S

%U

%w

%W

%x

%X

%y
%Y

%Z

%%

1.

2.

3.

4.

Abbreviated weekday (Sun)
Weekday (Sunday)
Abbreviated month name (Jan)
Month name (January)
Date and time
Day (leading zeros) (01 to 31)
24 hour (leading zeros) (00 to 23)
12 hour (leading zeros) (01 to 12)
Day of year (001 to 366)
Month (01 to 12)
Minute (00 to 59)
AM or PM
Second (00 to 61

 4

)

Week number 

1

 (00 to 53)

Weekday 

2

 (0 to 6)

Week number 

3

 (00 to 53)

Date 
Time 
Year without century (00 to 99)
Year (2008)
Time zone (GMT)
A literal "%" character (%)

Sunday as start of week. All days in a 
new year preceding the first Sunday 
are considered to be in week 0.

0 is Sunday, 6 is Saturday.

Monday as start of week. All days in a 
new year preceding the first Monday 
are considered to be in week 0.

This is not a mistake. Range takes 
account of leap and double-leap 
seconds.

lstrip()
partition(sep)
replace(old, new)
rfind(sub, start ,end)
rindex(sub, start, end)
rjust(width)
rpartition(sep)
rsplit(sep)
rstrip()
split(sep)
splitlines()
startswith(sub)
strip()
swapcase() 

*

title() 

*

translate(table)
upper() 

*

zfill(width)

Methods marked 

* 

are locale

dependant for 8-bit strings.

Note

__lt__(self, other)
__le__(self, other)
__gt__(self, other)
__ge__(self, other)
__eq__(self, other)
__ne__(self, other)
__nonzero__(self)

sys.argv for $ python foo.py bar -c qux --h

sys.argv[0]
sys.argv[1]
sys.argv[2]
sys.argv[3]
sys.argv[4]

foo.py
bar
-c
qux
--h

Alternative sep
Current dir string
Default search path
Path of null device
Extension separator
Line separator
Name of OS
Parent dir string
Patch separator
Path separator

Registered OS names: “posix”, “nt”,
“mac”, “os2”, “ce”, “java”, “riscos”

Note

Available free from AddedBytes.com

Command line args
Linked C modules
Native byte order
Signal check frequency
Root directory 
Name of executable 
Exit function name
Loaded modules
Search path
Current platform
File objects for I/O
Python version info 
Version number

File Methods

close()
flush()
fileno()
isatty()
next()
read(size)
readline(size)

readlines(size)
seek(offset)
tell()
truncate(size)
write(string)
writelines(list)

Time Methods

replace()
isoformat()
__str__()
strftime(format)

utcoffset()
dst()
tzname()

Datetime Methods

today()
now(timezoneinfo)
utcnow()
fromtimestamp(timestamp)
utcfromtimestamp(timestamp)

fromordinal(ordinal)
combine(date, time)
strptime(date, format)

List Methods

append(item)
count(item)
extend(list)
index(item)
insert(position, item)

pop(position)
remove(item)
reverse()
sort()