행복한디벨로퍼

pip3 로 pymysql 깔고 스크립트 실행했는데도 다음과 같은 에러가 날경우 ModuleNotFoundError: No module named 'pymysql'

$ pip3 install pymysql
WARNING: pip is being invoked by an old script wrapper. This will fail in a future version of pip.
Please see https://github.com/pypa/pip/issues/5599 for advice on fixing the underlying issue.
To avoid this problem you can invoke Python with '-m pip' instead of running pip directly.
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: PyMySQL in /Library/Python/3.8/site-packages (1.0.2)

내용보면 '-m pip'와 함께 실행해줄 것을 권고하고 있다.

> sudo python3 -m pip install pymysql
https://stackoverflow.com/questions/62968439/modulenotfounderror-no-module-named-pymysql-in-jupyter

로 다시 설치해주도록 하자~

pip3 install pymysql 시 'ModuleNotFoundError: No module named 'pip._vendor.packaging' 에러

Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 5, in <module>
    from pip._internal.cli.main import main
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/cli/main.py", line 9, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/cli/autocompletion.py", line 10, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/cli/main_parser.py", line 8, in <module>
    from pip._internal.cli import cmdoptions
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/cli/cmdoptions.py", line 21, in <module>
    from pip._vendor.packaging.utils import canonicalize_name
 ModuleNotFoundError: No module named 'pip._vendor.packaging'

해결방법
> curl -sS https://bootstrap.pypa.io/get-pip.py | sudo python3
> type pip3
> hash -r
> sudo pip3 install pymysql