macbook pip3路径报错

执行pip3命令，提示：zsh: /usr/local/bin/pip3: bad interpreter: /Library/Developer/CommandLineTools/usr/bin/python3: no such file or directory

执行pip3安装命令，提示：Defaulting to user installation because normal site-packages is not writeable 

如图

原因：python路径不正确

方法

➜ which python3

/usr/bin/python

➜ cd /usr/local/bin

➜ bin vim pip3

修改第一行为which python3的结果

#!/Library/Developer/CommandLineTools/usr/bin/python3
# -*- coding: utf-8 -*-
import re
import sys

from pip._internal.cli.main import main

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
    sys.exit(main())

如下：

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import re
import sys

from pip._internal.cli.main import main

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
    sys.exit(main())

再次执行pip3命令，无报错。