Coverage for local/lib/python2.7/site-packages/sage/__init__.py : 33%

__all__ = ['all'] 

# Make sure that the correct zlib library is loaded. This is needed 

# to prevent the system zlib to be loaded instead of the Sage one. 

# See https://trac.sagemath.org/ticket/23122 

import zlib 

# IPython calls this when starting up 

def load_ipython_extension(*args): 

import sage.repl.ipython_extension 

sage.repl.ipython_extension.load_ipython_extension(*args) 

# Monkey-patch inspect.isfunction() to support Cython functions. 

def isfunction(obj): 

""" 

Check whether something is a function. 

We assume that anything which has a genuine ``__code__`` 

attribute (not using ``__getattr__`` overrides) is a function. 

This is meant to support Cython functions. 

EXAMPLES:: 

sage: from inspect import isfunction 

sage: def f(): pass 

sage: isfunction(f) 

True 

sage: isfunction(lambda x:x) 

True 

sage: from sage.categories.coercion_methods import _mul_parent 

sage: isfunction(_mul_parent) 

True 

sage: isfunction(Integer.digits) # unbound method 

False 

sage: isfunction(Integer(1).digits) # bound method 

False 

""" 

# We use type(obj) instead of just obj to avoid __getattr__(). 

# Some types, like methods, will return the __code__ of the 

# underlying function in __getattr__() but we don't want to 

# detect those as functions. 

return hasattr(type(obj), "__code__") 

import inspect 

inspect.isfunction = isfunction