Thanks to Jeff (and others) for reminding me about doctest. I did 3 hours
leading a Python training today, for GIS people (ESRI is moving to Python
for its scripting language).
One of my modules contained this doctest example, which I tweaked to ensure
at least one test failed for the cameras:
def okfloat(anystring):
"""
Accept a string and say if it's in float format
>>> okfloat(1.2)
False
>>> okfloat('5.692')
True
>>> okfloat('abc')
False
>>> okfloat('1')
True
>>> okfloat([1]) # make True or invent test to force error report
False
"""
try:
# preferred: assert isinstance(anystring, basestring)
assert type(anystring)==type('')
f = float(anystring)
return True
except:
return False
if __name__ == '__main__':
import doctest
doctest.testmod()
All in all, the training went well, but I need to remember that 3 hrs is NOT
enough to cover all basic and advanced features of the language. We got to
generators, and even decorators, but not, perversely, classes per se.
Kirby
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