When using pip to install the module, it prompts MemoryError

When using pip to install dependent modules, the error is as follows:

Solution:
add --no-cache-dir parameter

pip3 --no-cache-dir install -r ***

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Other problems encountered during installation:

• Set python source command:

pip3 config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

Prompt that there is no config parameter;

• Solution: upgrade pip

pip3 install -U pip
pip install --upgrade pip

• 提示:ERROR: Cannot uninstall ‘PyYAML’. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

• Solution: Add parameter --ignore-installed

[pip3 --no-cache-dir install -r requirements.txt --ignore-installed