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pip

# pip install | download | uninstall | freeze | inspect | list | show | check | config | search | cache | index | wheel | hash | debug

eval "$(pip completion --bash)"

pip show torch # 显示信息
pip check      # 检查依赖

# Linux  ~/.cache/pip
# macOS /Users/$USER/Library/Caches/pip
# Windows C:\Users\$USER\AppData\Local\pip\Cache
# PIP_CACHE_DIR
# --cache-dir
pip cache dir

pip install datumaro==1.7.0 # 安装指定版本

# https://pypi.org/simple
pip3 install -h | grep index-url # 默认 index-url
pip config get global.index-url  # 查看配置的 index-url
pip3 config -v list              # 查看搜索的路径

# pip-check pip-review
pip list --outdated # 查看过期的包
  • /etc/pip.conf
  • %ProgramData%\pip\pip.ini
  • ~/.config/pip/pip.conf
  • %APPDATA%\pip\pip.ini
  • pip.conf
  • pip.ini

requirements.txt​

package1==version1
package2>=version2
pip freeze > requirements.txt

pip install -r requirements.txt

Torch​

# Torch
# ======
pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu

# libgomp-a34b3233.so.1: pthread_attr_setaffinity_np: symbol not found
# 可替换
apk add libgomp
cp /usr/lib/python3.10/site-packages/torch/lib/libgomp-a34b3233.so.1 backup/
cp /usr/lib/libgomp.so.1 /usr/lib/python3.10/site-packages/torch/lib/libgomp-a34b3233.so.1

# libtorch_python.so: __register_atfork
# 无法替换只能重新编译
import torch
print(torch.__version__)

print(torch.version.cuda)
print(torch.backends.cudnn.version())

torch.cuda.is_available() # CUDA 是否可用
torch.cuda.device_count() # GPU 数量
torch.cuda.get_device_name(0) # 返回 GPU 名称
torch.cuda.current_device() # 返回当前 GPU 索引
  • cudnn 不会支持 musl

Mirror​

~/.pip/pip.conf
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
[install]
trusted-host = https://pypi.tuna.tsinghua.edu.cn

conf​

[global]
proxy = http://user:password@proxy_name:port

FAQ

Running pip as the 'root' user can result in broken permissions​

--root-user-action=ignore
  • PIP_ROOT_USER_ACTION=ignore

WARNING: There was an error checking the latest version of pip​

# 可以禁用
pip install touch --disable-pip-version-check