Python raise_on_false Examples

Example #1

File: misc.py Project: flynx/pli

def r_isinstore(store, excep=None, msg=None):
	'''
	this will cunstruct a test function that will test if an object exists
	in a given store or raise an exception.
	'''
	name = hasattr(store, '__name__') and store.__name__ or store.__class__.__name__
	return func.raise_on_false(isinstore(store), 'r_isin' + name,\
								excep != None and NameError \
											or excep, \
								msg != None and ('object not found in store %s.' % store) \
											or msg)

Example #2

File: extendedtypes.py Project: flynx/pli

import pli.functional as func


#-----------------------------------------------------------------------
#--------------------------------------------------------------string---
def string(obj):
	'''
	return true if the object is either str or unicode.
	'''
	return type(obj) in (str, unicode)

isstring = string

#- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
r_string = func.raise_on_false(string, TypeError, 'r_string', 'object is nither str or unicode.')


#-------------------------------------------------------------isemail---
EMAIL = '^\s*[-_a-z0-9.]+@[-_a-z0-9.]+\.\w+\s*$'
_email_pattern = re.compile(EMAIL, re.I)

#- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
def isemail(obj):
	'''
	return true if the obj is compatible with the email format spec (see EMAIL).
	'''
	return _email_pattern.match(obj) != None

#- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
r_isemail = func.raise_on_false(isemail, TypeError, 'r_isemail', 'object does not match email pattern.')