python的sys.path模块路径添加_Python3基础 sys.path.append 增加模块的搜索路径

Python : 3.7.0

OS : Ubuntu 18.04.1 LTS

IDE : PyCharm 2018.2.4

Conda : 4.5.11

typesetting : Markdown

code

"""

@Author : 行初心

@Date : 18-10-2

@Blog : www.cnblogs.com/xingchuxin

@Gitee : gitee.com/zhichengjiu

"""

import sys

import os

def main():

path = os.path.abspath(os.curdir)

print(path)

path = str(path)

# 用+连接字符串，好用 。但是连接大量的字符串就不好了。要用自带的函数

new_path = path + '/MyModuleFile'

print(new_path)

print("旧", sys.path)

# 将MyModuleFile(跟主代码在一起的文件夹)添加到搜索路径当中

sys.path.append(new_path)

print("新", sys.path)

# 也可以进行优化，删除不必要的显示后成为一个函数。方便以后调用

if __name__ == '__main__':

main()

result

/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/base/demo.py

/home/coder/PycharmProjects/base

/home/coder/PycharmProjects/base/MyModuleFile

旧 ['/home/coder/PycharmProjects/base', '/home/coder/PycharmProjects/base', '/home/coder/anaconda3/envs/py37/lib/python37.zip', '/home/coder/anaconda3/envs/py37/lib/python3.7', '/home/coder/anaconda3/envs/py37/lib/python3.7/lib-dynload', '/home/coder/anaconda3/envs/py37/lib/python3.7/site-packages', '/home/coder/pycharm-2018.2.4/helpers/pycharm_matplotlib_backend']

新 ['/home/coder/PycharmProjects/base', '/home/coder/PycharmProjects/base', '/home/coder/anaconda3/envs/py37/lib/python37.zip', '/home/coder/anaconda3/envs/py37/lib/python3.7', '/home/coder/anaconda3/envs/py37/lib/python3.7/lib-dynload', '/home/coder/anaconda3/envs/py37/lib/python3.7/site-packages', '/home/coder/pycharm-2018.2.4/helpers/pycharm_matplotlib_backend', '/home/coder/PycharmProjects/base/MyModuleFile']

Process finished with exit code 0

resource

[文档] docs.python.org/3

[规范] www.python.org/dev/peps/pep-0008

[规范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules

[源码] www.python.org/downloads/source

[ PEP ] www.python.org/dev/peps

[平台] www.cnblogs.com

[平台] gitee.com

Python具有开源、跨平台、解释型、交互式等特性，值得学习。

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代码的书写要遵守规范，这样有助于沟通和理解。

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