Python 重复安装包报错

最近写程序用到argparse总是会报错 /usr/lib/python2.7/dist-packages/pygments/plugin.py:39: UserWarning: Module argparse was already imported from /usr/lib/python2.7/argparse.pyc, but /usr/local/lib/python2.7/dist-packages is being added to sys.path 一开 …

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Python 常用的列表操作

这里介绍几个常用的列表操作 添加元素 添加元素使用列表的内置方法append number = [1, 2, 3, 4] number.append(5) # number = [1, 2, 3, 4, 5] number.append([6,7]) # number …

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