2019-06-11_Python循环语句

# coding=utf-8
# !/usr/bin/python

# 命令1
# count = 0
# while (count < 9):
#     print 'The count is:', count
#     count = count + 1
#     print "Good bye!"


# 命令2
#!/usr/bin/python
# -*- coding: UTF-8 -*-

# for letter in 'Python':     # 第一个实例
#    print '当前字母 :', letter
#
# fruits = ['banana', 'apple',  'mango']
# for fruit in fruits:        # 第二个实例
#    print '当前字母 :', fruit
#
# print "Good bye!"

# 命令3

# i = 2
# while(i < 100):
#    j = 2
#    while(j <= (i/j)):
#       if not(i%j): break
#       j = j + 1
#    if (j > i/j) : print i, " 是素数"
#    i = i + 1
#
# print "Good bye!"

# 命令4：打印100以内的质数
# num=[];
# i=2
# for i in range(2,100):
#    j=2
#    for j in range(2,i):
#       if(i%j==0):
#          break
#    else:
#       num.append(i)
# print(num)

# 命令5：实现金字塔的效果
#*字塔
# i=1
# #j=1
# while i<=9:
#    if i<=5:
#       print ("*"*i)
#
#    elif i<=9 :
#       j=i-2*(i-5)
#       print("*"*j)
#    i+=1
# else :
#    print("")

链接地址：https://www.w3cschool.cn/python/python-nested-loops.html