From: Fabian Seoane <[email protected]>
---
sympy/simplify/simplify.py | 15 ++++++++++++++-
1 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/sympy/simplify/simplify.py b/sympy/simplify/simplify.py
index ffceb9d..4ccc886 100644
--- a/sympy/simplify/simplify.py
+++ b/sympy/simplify/simplify.py
@@ -162,7 +162,6 @@ def separate(expr, deep=False):
if expr.is_Pow:
terms, expo = [], separate(expr.exp, deep)
- #print expr, terms, expo, expr.base
if expr.base.is_Mul:
t = [ separate(C.Pow(t,expo), deep) for t in expr.base.args ]
@@ -512,6 +511,16 @@ def collect(expr, syms, evaluate=True, exact=False):
return expr, (sym, Rational(order))
def parse_term(expr):
+ """Parses expression expr and outputs tuple (sexpr, rat_expo,
sym_expo, deriv)
+ where:
+ - sexpr is the base expression
+ - rat_expo is the rational exponent that sexpr is raised to
+ - sym_expo is the symbolic exponent that sexpr is raised to
+ - deriv contains the derivatives the the expression
+
+ for example, the output of x would be (x, 1, None, None)
+ the output of 2**x would be (2, 1, x, None)
+ """
rat_expo, sym_expo = S.One, None
sexpr, deriv = expr, None
@@ -546,6 +555,10 @@ def collect(expr, syms, evaluate=True, exact=False):
return sexpr, rat_expo, sym_expo, deriv
def parse_expression(terms, pattern):
+ """Parse terms searching for a pattern.
+ terms is a list of tuples as returned by parse_terms
+ pattern is an expression
+ """
pattern = make_list(pattern, Mul)
if len(terms) < len(pattern):
--
1.6.0.2
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