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Ensure that virtualenv is activated before using pip
Use the "sudo" command to run pip with administrative privileges
Make sure that the correct version of pip is installed in the virtualenv
Check that the virtualenv directory has the correct file permissions
Use the "--user" option when installing packages with pip to install them in the user's home directory, which may not require administrative privileges
Use the "-E" or "--environment" option to specify a different location for the virtualenv
Use a different virtual environment manager that does not use system-wide permissions, such as Conda or Pyenv.