# Python3比較運算子範例

2019-10-16 23:11:41

==

(a == b) 不為 true.
!=

<>

(a <> b) 為 true. 這類似於 != 運算子
>

(a > b) 不為true.
<

(a < b) 為 true.
>=

(a >= b) 不為 true.
<=

(a <= b) 為 true.

## 範例

```#!/usr/bin/python3

a = 21
b = 10

if ( a == b ):
print ("Line 1 - a is equal to b")
else:
print ("Line 1 - a is not equal to b")

if ( a != b ):
print ("Line 2 - a is not equal to b")
else:
print ("Line 2 - a is equal to b")

if ( a < b ):
print ("Line 3 - a is less than b" )
else:
print ("Line 3 - a is not less than b")

if ( a > b ):
print ("Line 4 - a is greater than b")
else:
print ("Line 4 - a is not greater than b")

a,b=b,a #values of a and b swapped. a becomes 10, b becomes 21

if ( a <= b ):
print ("Line 5 - a is either less than or equal to  b")
else:
print ("Line 5 - a is neither less than nor equal to  b")

if ( b >= a ):
print ("Line 6 - b is either greater than  or equal to b")
else:
print ("Line 6 - b is neither greater than  nor equal to b")```

```Line 1 - a is not equal to b
Line 2 - a is not equal to b
Line 3 - a is not less than b
Line 4 - a is greater than b
Line 5 - a is either less than or equal to  b
Line 6 - b is either greater than  or equal to b```