zipapp Executable ZIP archives Package Management zipimport Import modules from ZIP archives Package Management asynchat Async chat support (Deprecated: Removed in 3.12) Parallel Processing asyncio Asynchronous I/O Parallel Processing asyncore Async socket handler (Deprecated: Removed in 3.12) Parallel Proces...
如果要在一个模块A中使用另一个模块B(即访问模块B的属性),则必须首先 导入 模块B。此时模块A称为导入模块(即importer),而模块B称为被导入模块(即importee)。导入语句(import statement)有两种风格:import <>和from <> import。对模块的导入同时支持这两种风格。
Note: A directory must contain a file named__init__.pyin order for Python to consider it as a package. This file can be left empty but we generally place the initialization code for that package in this file. Importing module from a package In Python, we can import modules from packages...
There's more than one way to import a package (or a module inside a package). The method you use will determine whether or not you need to prefix your function names with the module and/or package name. Here are the variations: # Option 1 import myPackage from myPackage import calculatio...
For example, to import the entirerandommodule and then print a random number with itsrandintfunction, you would write: fromrandomimport*print(randint(0,5)) Import multiple modules by writing multiple from-import instructions.#无他,一种写法而已。而且为了直观,最好分行写You should start a new line...
from mypackage import power, average, SayHello SayHello() x=power(3,2) print("power(3,2) : ", x)Note that functions power() and SayHello() are imported from the package and not from their respective modules, as done earlier. The output of the above script is:D...
from distutils.core import setup, Extension setup(ext_modules=[Extension('hello', ['hello.c'])]) Example 22-4 is a Python script run by Python; it is not a makefile. Moreover, there is nothing in it about a particular compiler or compiler options. Instead, the Distutils tools it empl...
modules 0.1.4 pycparser 2.18 PyDispatcher 2.0.5 Pygments 2.2.0 pylint 1.8.3 pymssql 2.1.3 PyMySQL 0.7.11 PyNaCl 1.2.1 pyOpenSSL 17.3.0 pyparsing 2.2.0 pypng 0.0.18 pyreadline 2.1 pyspark 2.3.0 python-dateutil 2.6.1 python-snappy 0.5.2 pytz 2017.2 pywin32-ctypes 0.1.2 PyYAML 3.12 ...
>>> from collections import OrderedDict, defaultdict >>> df.to_dict(into=OrderedDict) OrderedDict([('col1', OrderedDict([('row1', 1), ('row2', 2)])), ('col2', OrderedDict([('row1', 0.5), ('row2', 0.75)]))]) If you want a `defaultdict`, you need to initialize it: >>...
form multiprocessing import Process从multiprocessing包中导入Process模块 multiprocess是python中的一个操作管理进程的一个包,multi是取自multiple的多功能的意思,在这个包中,几乎包含了和进程操作的所有模块,有与子模块非常多,为了方便大家学习可以分为四个部分:创建进程部分,进程池部分,进程同步部分,进程之间数据共享 ...