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Python-條件敘述

Python

條件敘述概念說明

參考程式語言概念-條件敘述
條件敘述可用於對於程式某些變數的狀態進行判斷,並在該狀態執行特定工作,此種做有法助於程式結構化。

基本語法:


Python的範例條件敘述如下:

n = 3
if n < 0:
   print('n<0')
elif n == 0:
   print('n==0')
elif n == 2:
   print('n==2')
else:
   print('Other')

在條件敘述加上變數單元中的比較運算,如果有兩個以上的條件可以加上邏輯運算。

if a > 0 and b > 0:

   print('a>b而且b>0')


程式碼說明
n 定義變數
if    如果,後面加條件
elif  其他條件,後面加條件
else 其他,後面不加條件
在條件式結尾必續加上:,下一行必須縮排,再加上要在該條件下,要執行的動作




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