Module Simplify
source code
Functions for simplifying python math expressions.
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simplify_expr(expr)
Return a simplified version of the expression. |
source code
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_ZERO = Const(0)
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_ONE = Const(1)
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Imports:
Slice,
Const,
Raise,
For,
AssTuple,
Mul,
Invert,
RightShift,
AssList,
Add,
Dict,
flatten,
UnaryAdd,
Import,
Print,
Ellipsis,
Sliceobj,
Decorators,
Subscript,
Name,
Node,
Assert,
Return,
Power,
Exec,
CO_VARKEYWORDS,
GenExprFor,
Stmt,
Or,
Break,
CO_VARARGS,
Bitand,
FloorDiv,
Tuple,
Bitxor,
TryExcept,
Not,
nodes,
EmptyNode,
With,
Class,
Mod,
Printnl,
Function,
TryFinally,
GenExprIf,
While,
AssAttr,
Keyword,
GenExpr,
Module,
AugAssign,
List,
Yield,
IfExp,
AssName,
From,
Continue,
Backquote,
Discard,
Div,
Expression,
Assign,
Lambda,
And,
LeftShift,
Compare,
GenExprInner,
CallFunc,
Global,
Getattr,
ListCompIf,
Sub,
ListCompFor,
flatten_nodes,
Pass,
UnarySub,
Bitor,
ListComp,
If,
operator,
sets,
AST
Return a simplified ast.
Current simplifications:
Special cases for zeros and ones, and combining of constants, in
addition, subtraction, multiplication, division.
Note that at present we only handle constants applied left to right.
1+1+x -> 2+x, but x+1+1 -> x+1+1.
x - x = 0
--x = x
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