Pip Install "Invalid Syntax" hatası

Python 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:58:18) [MSC v.1900 64 bit (AMD64)] on win32
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>>> pip install
  File "<stdin>", line 1
    pip install PyQt5
              ^
SyntaxError: invalid syntax