Package ComboCode :: Package cc :: Package ivs :: Package sigproc :: Package lmfit :: Module asteval

Module asteval

Safe(ish) evaluator of python expressions, using ast module. The emphasis here is on mathematical expressions, and so numpy functions are imported if available and used.

Symbols are held in the Interpreter symtable -- a simple dictionary supporting a simple, flat namespace.

Expressions can be compiled into ast node and then evaluated later, using the current values in the

Version: 0.3.1

Classes

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Empty
basic empty containter

Interpreter
mathematical expression compiler and interpreter.

Procedure
Procedure: user-defined function for asteval

Functions

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op2func(op)
return function for operator nodes

source code

Variables

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HAS_NUMPY = True

OPERATORS = {ast.Add: lambda a, b: b.__radd__(a) if isParamete...

ReturnedNone = Empty()

__package__ = 'ComboCode.cc.ivs.sigproc.lmfit'

Variables Details

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OPERATORS

Value:

{ast.Add: lambda a, b: b.__radd__(a) if isParameter(b) else a+ b, ast.
Sub: lambda a, b: b.__rsub__(a) if isParameter(b) else a-b, ast.Mult: 
lambda a, b: b.__rmul__(a) if isParameter(b) else a* b, ast.Div: lambd
a a, b: b.__rdiv__(a) if isParameter(b) else a/ b, ast.FloorDiv: lambd
a a, b: b.__rfloordiv__(a) if isParameter(b) else a// b, ast.Mod: lamb
da a, b: b.__rmod__(a) if isParameter(b) else a % b, ast.Pow: lambda a
, b: b.__rpow__(a) if isParameter(b) else a** b, ast.Eq: lambda a, b: 
b.__eq__(a) if isParameter(b) else a== b, ast.Gt: lambda a, b: b.__le_
...