Sometimes you want a Class whose functions do nothing.
Python, 19 lines
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Copy to clipboard1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # You can insert the folowing two lines
# to your program to make NullClass available.
class NullClass:
def __getattr__(self,name): return lambda *x,**y: None
# -------------------------------------------
# Example: switched writing to a logfile
log=err=NullClass()
if verbose:
log = open('/tmp/log')
err = open('/tmp/err')
log.write('blabla')
err.write('blabla error')
#This obviously avoids the usual pollution from stuff like "if verbose: ".
#NullClass also accepts keyword arguments.
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Tags: shortcuts
