python sheet
Python sys Variables
| 变量 |
说明 |
| argv |
Command line args |
| builtin_module_names |
Linked C modules |
| byteorder |
Native byte order |
| exec_prefix |
Root directory |
| executable |
Name of executable |
| modules |
Loaded modules |
| path |
Search path |
| platform |
Current platform |
| stdin, stdout, stderr |
File objects for I/O |
| version_info |
Python version info |
| version |
Version number |
Python sys.argv
sys.argv for the command:
$ python foo.py bar -c qux –h
| 变量 |
说明 |
| sys.argv[0] |
foo.py |
| sys.argv[1] |
bar |
| sys.argv[2] |
-c |
| sys.argv[3] |
qux |
| sys.argv[4] |
--h |
Python os Variables
| 方法 |
说明 |
| altsep |
Alternative sep |
| curdir |
Current dir string |
| defpath |
Default search path |
| devnull |
Path of null device |
| extsep |
Extension separator |
| linesep |
Line separator |
| name |
Name of OS |
| pardir |
Parent dir string |
| pathsep |
Patch separator |
| sep |
Path separator |
Registered OS names: “posix”, “nt”, “mac”, “os2”, “ce”, “java”, “riscos”
Python Class Special Methods
| 方法 |
说明 |
| __new__(cls) |
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| init(self, args) |
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| __del__(self) |
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| __str__(self) |
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| repr(self) |
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| lt(self, other) |
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| le(self, other) |
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| gt(self, other) |
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| ge(self, other) |
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| eq(self, other) |
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| ne(self, other) |
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| __cmp__(self, other) |
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| index(self) |
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| nonzero(self) |
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| hash(self) |
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| getattr(self, name) |
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| __getattribute__(self, name) |
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| setattr(self, name, attr) |
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| delattr(self, name) |
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| call(self, args, kwargs) |
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Python List Methods
| 方法 |
说明 |
| append(item) |
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| pop(position) |
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| count(item) |
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| remove(item) |
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| extend(list) |
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| reverse() |
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| index(item) |
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| sort() |
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| insert(position, item) |
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Python String Methods
| 方法 |
说明 |
| decode() |
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| encode() |
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| count(sub, start, end) |
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| index(sub, start, end) |
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| rindex(sub, start, end) |
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| find(sub, start, end) |
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| rfind(sub, start ,end) |
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| startswith(sub) |
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| endswith(sub) |
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| center(width) |
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| rjust(width) |
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| ljust(width) |
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| zfill(width) |
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| expandtabs() |
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| strip() |
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| lstrip() |
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| rstrip() |
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| split(sep) |
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| rsplit(sep) |
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| splitlines() |
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| partition(sep) |
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| rpartition(sep) |
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| join() |
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| swapcase() * |
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| capitalize() * |
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| title() * |
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| translate(table) |
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| lower() * |
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| upper() * |
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| replace(old, new) |
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| isdigit() * |
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| isalnum() * |
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| isspace() * |
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| istitle() * |
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| islower() * |
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| isupper() * |
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| isalpha() * |
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Methods marked * are locale dependant for 8-bit strings.
Python File Methods
| 方法 |
说明 |
| close() |
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| readlines(size) |
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| flush() |
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| seek(offset) |
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| fileno() |
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| tell() |
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| isatty() |
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| truncate(size) |
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| next() |
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| write(string) |
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| read(size) |
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| writelines(list) |
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| readline(size) |
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Python Indexes and Slices
Indexes and Slices of a=[0,1,2,3,4,5]
| 操作 |
结果 |
| len(a) |
6 |
| a[0] |
0 |
| a[5] |
5 |
| a[-1] |
5 |
| a[-2] |
4 |
| a[1:] |
[1,2,3,4,5] |
| a[:5] |
[0,1,2,3,4] |
| a[:-2] |
[0,1,2,3] |
| a[1:3] |
[1,2] |
| a[1:-1] |
[1,2,3,4] |
| b=a[:] |
Shallow copy of a |
Python Datetime Methods
| 操作 |
结果 |
| today() |
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| fromordinal(ordinal) |
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| now(timezoneinfo) |
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| combine(date, time) |
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| utcnow() |
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| strptime(date, format) |
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| fromtimestamp(timestamp) |
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| utcfromtimestamp(timestamp) |
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Python Time Methods
| 操作 |
结果 |
| replace() |
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| utcoffset() |
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| isoformat() |
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| dst() |
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| str() |
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| tzname() |
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| strftime(format) |
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