【python】入門指南:控制語句
阿新 • • 發佈:2018-10-20
pan else pre 循環 clas python continue break for
條件控制
if,if-else,if-elseif-else
#!/bin/python a = ‘test‘ if a == ‘test‘: print(‘a is %s‘ %(a)) else: print(‘a is not test‘) if a == ‘test‘: print(‘a is test‘) a = ‘other‘ if a == ‘test‘: print(‘a is test‘) elif a == ‘test1‘: print(‘a is test1‘) else: print(‘a is not test or test1‘)
輸出結果:
a is test a is test a is not test or test1
for循環控制
for循環中,加入控制流程:for-continue(繼續循環),for-break(跳出循環)
#!/bin/python for i in range(1, 3): print(i) for i in [1, 2, 3]: print(i) for i in range(0, 100): if i <= 20: continueelse: if i >= 25: break else: print(i)
輸出結果:
1 2 1 2 3 21 22 23 24
while循環控制
#!/bin/python i = 0 while i <= 20: if i < 10: i += 1 continue; elif i >= 10 and i <= 15: i += 1 elifi == 16: break else: i += 1 print(i)
輸出結果:
11 12 13 14 15 16
【python】入門指南:控制語句