23 lines
610 B
Python
23 lines
610 B
Python
# Checking for system version
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import sys
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major, minor, bugfix = sys.version_info[:3]
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if major < 2:
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sys.exit('Python 2 is required')
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def defined(name): # LBYL (Look Before You Leap)
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return name in globals() or name in locals() or name in vars(__builtins__)
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def defined2(name): # EAFP (Easier to Ask Forgiveness than Permission)
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try:
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eval(name)
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return True
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except NameError:
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return False
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if defined('bloop') and defined('abs') and callable(abs):
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print abs(bloop)
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if defined2('bloop') and defined2('abs') and callable(abs):
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print abs(bloop)
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