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https://github.com/jbranchaud/til
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51 lines
1.3 KiB
Markdown
51 lines
1.3 KiB
Markdown
# Check If Package Is Installed With Pip
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I recently installed PyTorch, but when I tried using it, I was getting an error
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about `numpy` not being installed. I was kind of surprised by that because I
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thought I would have already had that.
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I wanted to check, so I asked with `pip show`:
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```bash
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❯ python3 -m pip show numpy
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WARNING: Package(s) not found: numpy
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```
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I can even list everything that is installed with `pip` using `pip list` like
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so:
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```bash
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❯ python3 -m pip list
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Package Version Build
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------------------ --------- -----
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certifi 2026.1.4
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cffi 2.0.0
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charset-normalizer 3.4.4
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click 8.3.1
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commonmark 0.9.1
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cryptography 46.0.3
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docutils 0.22.4
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filelock 3.24.2
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fsspec 2026.2.0
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idna 3.11
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Jinja2 3.1.6
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...
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```
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I then installed `numpy` (`python3 -m pip install numpy`) and how I can use `pip
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show` again to confirm that.
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```bash
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❯ python3 -m pip show numpy
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Name: numpy
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Version: 2.4.2
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Summary: Fundamental package for array computing in Python
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Home-page: https://numpy.org
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Author: Travis E. Oliphant et al.
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Author-email:
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License-Expression: BSD-3-Clause AND 0BSD AND MIT AND Zlib AND CC0-1.0
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Location: /Users/lastword/.local/share/mise/installs/python/3.12.12/lib/python3.12/site-packages
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Requires:
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Required-by:
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```
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