下表列出了所有python語言支持的邏輯運(yùn)算符。假設(shè)變量a持有10和變量b持有20，則：

示例:

試試下面的例子就明白了所有的python編程語言提供了邏輯運(yùn)算符：

#!/usr/bin/python

a = 10

b = 20

c = 0

if ( a and b ):

print "line 1 - a and b are true"

else:

print "line 1 - either a is not true or b is not true"

if ( a or b ):

print "line 2 - either a is true or b is true or both are true"

else:

print "line 2 - neither a is true nor b is true"

a = 0

if ( a and b ):

print "line 3 - a and b are true"

else:

print "line 3 - either a is not true or b is not true"

if ( a or b ):

print "line 4 - either a is true or b is true or both are true"

else:

print "line 4 - neither a is true nor b is true"

if not( a and b ):

print "line 5 - either a is not true or b is not true"

else:

print "line 5 - a and b are true"

當(dāng)執(zhí)行上面的程序它會(huì)產(chǎn)生以下結(jié)果：

line 1 - a and b are true

line 2 - either a is true or b is true or both are true

line 3 - either a is not true or b is not true

line 4 - either a is true or b is true or both are true

line 5 - either a is not true or b is not true

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