add __all__

pymath/arithmetic.py

@@ -2,6 +2,8 @@
 # encoding: utf-8
 
 
+__all__ = ['gcd']
+
 def gcd(a, b):
         """Compute gcd(a,b)
 

pymath/expression.py

@@ -6,6 +6,8 @@ from .fraction import Fraction
 from .renders import txt_render, post2in_fix, tex_render
 from .polynom import Polynom
 
+__all__ = ['Expression']
+
 class Expression(object):
     """A calculus expression. Today it can andle only expression with numbers later it will be able to manipulate unknown"""
 

pymath/fraction.py

@@ -3,6 +3,8 @@
 
 from .arithmetic import gcd
 
+__all__ = ['Fraction']
+
 class Fraction(object):
     """Fractions!"""
 

pymath/polynom.py

@@ -5,6 +5,8 @@ from .fraction import Fraction
 from .generic import add_in_dict, remove_in_dict, convolution_dict
 import re
 
+__all__ = ['Polynom']
+
 class Polynom(object):
     """A polynom (similare to Symbol in Sympy"""
 

pymath/render.py

@@ -5,6 +5,8 @@ from .generic import Stack,flatten_list
 from .fraction import Fraction
 from .polynom import Polynom
 
+__all__ = ['Render']
+
 class Render(object):
     """A class which aims to create render functions from three dictionnaries:
         - op_infix: dict of caracters or two argument functions

pymath/renders.py

@@ -6,6 +6,8 @@ from .fraction import Fraction
 from .polynom import Polynom
 from .generic import first_elem, last_elem
 
+__all__ = ['post2in_fix', 'tex_render', 'txt_render']
+
 # ------------------------
 # A infix to postfix list convertor