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A python expression evaluate library

Installation

pip install pyexpr

Usage

  • Simple evaluation
assert pyexpr.evaluate('1 + 2 * (3 - 4) **2') == 3
  • With functions
assert pyexpr.evaluate('1 + 2 * (3 - 4) ** sqrt(4)', builtins=dict(sqrt=math.sqrt)) == 3
  • With variables
assert pyexpr.evaluate('1 + 2 * (3 - 4) ** X', variables=dict(X=4)) == 3

You can find more examples in test.py