boolean_operators.py

python编程很好的入门材料,包括讲义和源码.

var1 = 10

#-------------------------------------------------------------------------------
# The "and" Operator will only return True if both comparisons return True.
#-------------------------------------------------------------------------------

print var1 == 10 and var1 <= 5

#-------------------------------------------------------------------------------
# The "or" Operator will return True if any of the comparisons returns True.
#-------------------------------------------------------------------------------

print var1 == 20 or var1 >= 5

#-------------------------------------------------------------------------------
# The "not" Operator simply negates or inverts the result of the comparison.
#-------------------------------------------------------------------------------

print not var1 == 10

raw_input( "\nPress Enter to exit..." )