Python流程控制
匿名V5程序员 人气:01、if条件选择
# coding:utf-8 num = 23 if num>2: print("dayu") if num<2: print("xiaoyu") ## if else if num>10: print("D") else: print("A") ## if elif else if num < 10: print("D") elif num < 20: print("C") elif num < 30: print("B") else: print("A") ## if 嵌套 if num > 10: if num>20: if num >30: print("A") else: print("B") else: print("C") else: print("D")
2、for循环
# coding:utf-8 # Author:Yang Xiaopeng for i in (1,2,3,4,5,6,7,8): if i < 8: print(i,end="____") else: print(i) list1 = [1,2,3,4,5,6] for item in list1: if item / 2 == 1: print(item) for item in "asjhlafjhkllsadk": if item == 'k': print(item) else: print(item,end="_")
3、while循环
# coding:utf-8 # Author:Yang Xiaopeng # 死循环 """ while True: pass """ num = 1 while num<10: print(num,end="_") num+=1
4、break 及 continue
- break: 结束循环
- continue 退出本轮循环,继续下一轮循环
# coding:utf-8 # Author:Yang Xiaopeng num = 0 while num<10: num += 1 if num <=6: continue print(num, end="_") print("") num =0 while num<10: num = num + 1 if num == 6: break print(num, end="_")
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