变量
一个由程序员或用户定义的量且在程序中可能发生改变的量
#变量是所有程序的起点
变量的分类:
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不可变型:无法对变量内的某一个单一元素进行修改、增加、删除 字符串 - str - string - “变量” 整数 - int - integer - 100 浮点 - float - float - 3.111 1.0 元组 - tuple - tuple - ( 1 , 2 , "a" , "好" ) 可变型:可以对变量内的某一个单一或多个元素进行修改、增加、删除 字典 - dict - dictionary - { "name" : "张三" , "age" : "33" } 列表 - list - list - [ 1 , 2 , "张三" , "a" ] |
赋值
从右向左赋值
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name = "张三" name_list = [ "张三" , "a" ] 变量名字 —映射— 内存地址 — 内存存储 |
name —— 2131231 “张三”
变量的命名规则:
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强制性规则 1、变量开头不能是数字 2、特殊字符不能出现在变量中( 除_ 外) 3、变量名称不能出现空格 4、变量名区分大小写A和a是两个变量 约定俗称的规则 1、大驼峰 (ClassName一般用做类名) 2、小驼峰 (defName一般用做方法名) 3、下划线分割 (t_name一般用做变量名) 4、不用0(零)和o(O)作为开头或结尾 |
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import string import random name = 'gaobo' sex = 'nv' nia = 'nan' high = 3 print ( "姓名%s,性别%s,年龄%s,身高%.2f" % (name, sex, nia, high)) list2 = [ "0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' ] addlis = [] for i in range ( 8 ): qu = list2[random.randint( 0 , len (list2) - 1 )] print (qu) addlis.append(qu) print (addlis) print ( "我的提取码:" , "".join(addlis)) qu_li = "".join(random.sample((string.ascii_lowercase + string.digits), 10 )) print ( "我的提取码:" , qu_li) ''' # name = "1" # age = '2' # sex = '3' # word = '4' # a = '5' # print("%s"'%s''%s''%s' % (name, age, sex, word), "%s" %(a)) # # rand = string.digits + string.ascii_letters list1 = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'] add_list = [] for i in range(8): qu_1 = list1[random.randint(0, len(list1)-1)] add_list.append(qu_1) print("".join(add_list)) add_l = "".join(random.sample((string.digits + string.ascii_lowercase), 8)) print(add_l) # list = ["0","1","2","3","4","5","6","7","8","9",'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'] # my_code = [] # for i in range(8): # qu_code = list[random.randint(0, len(list)-1)] # print(qu_code) # my_code.append(qu_code) # a = "" # print("我的提取码为", a.join(my_code) ) # # a = ''.join(random.sample((string.digits + string.ascii_lowercase),8)) # print(a) # # ''' |
总结
本篇文章就到这里了,希望能够给你带来帮助,也希望您能够多多关注服务器之家的更多内容!
变量
一个由程序员或用户定义的量且在程序中可能发生改变的量
#变量是所有程序的起点
变量的分类:
1
2
3
4
5
6
7
8
|
不可变型:无法对变量内的某一个单一元素进行修改、增加、删除 字符串 - str - string - “变量” 整数 - int - integer - 100 浮点 - float - float - 3.111 1.0 元组 - tuple - tuple - ( 1 , 2 , "a" , "好" ) 可变型:可以对变量内的某一个单一或多个元素进行修改、增加、删除 字典 - dict - dictionary - { "name" : "张三" , "age" : "33" } 列表 - list - list - [ 1 , 2 , "张三" , "a" ] |
赋值
从右向左赋值
1
2
3
|
name = "张三" name_list = [ "张三" , "a" ] 变量名字 —映射— 内存地址 — 内存存储 |
name —— 2131231 “张三”
变量的命名规则:
1
2
3
4
5
6
7
8
9
10
|
强制性规则 1、变量开头不能是数字 2、特殊字符不能出现在变量中( 除_ 外) 3、变量名称不能出现空格 4、变量名区分大小写A和a是两个变量 约定俗称的规则 1、大驼峰 (ClassName一般用做类名) 2、小驼峰 (defName一般用做方法名) 3、下划线分割 (t_name一般用做变量名) 4、不用0(零)和o(O)作为开头或结尾 |
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import string import random name = 'gaobo' sex = 'nv' nia = 'nan' high = 3 print ( "姓名%s,性别%s,年龄%s,身高%.2f" % (name, sex, nia, high)) list2 = [ "0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' ] addlis = [] for i in range ( 8 ): qu = list2[random.randint( 0 , len (list2) - 1 )] print (qu) addlis.append(qu) print (addlis) print ( "我的提取码:" , "".join(addlis)) qu_li = "".join(random.sample((string.ascii_lowercase + string.digits), 10 )) print ( "我的提取码:" , qu_li) ''' # name = "1" # age = '2' # sex = '3' # word = '4' # a = '5' # print("%s"'%s''%s''%s' % (name, age, sex, word), "%s" %(a)) # # rand = string.digits + string.ascii_letters list1 = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'] add_list = [] for i in range(8): qu_1 = list1[random.randint(0, len(list1)-1)] add_list.append(qu_1) print("".join(add_list)) add_l = "".join(random.sample((string.digits + string.ascii_lowercase), 8)) print(add_l) # list = ["0","1","2","3","4","5","6","7","8","9",'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'] # my_code = [] # for i in range(8): # qu_code = list[random.randint(0, len(list)-1)] # print(qu_code) # my_code.append(qu_code) # a = "" # print("我的提取码为", a.join(my_code) ) # # a = ''.join(random.sample((string.digits + string.ascii_lowercase),8)) # print(a) # # ''' |
总结
本篇文章就到这里了,希望能够给你带来帮助,也希望您能够多多关注服务器之家的更多内容!
原文链接:https://blog.csdn.net/Tallbo/article/details/121220526