day1学习内容汇总

1. 编译型语言和解释型的区别:以书的翻译为例,编译型语言就是翻译一次性把书翻译好了,然后给你看;解释型语言就是你看一句,翻译一句的这种;

2. shell脚本第一行的作用是,给系统说明解释器;

#!/usr/bin/enf python

3.变量作用:保存,方便后面使用;可以使用数字,字母,下划线进行定义;

!%s保存字符型,input读取的内容都是字符,如果后面是整型调用,那么需要使用强制转换;

!‘’‘’‘’注释符的作用,还可以用来保存一段文字;

4.三种输出模式:

!(1)使用拼接,如果很长的话不建议;

! (2)使用占位符,例如%s等,对应输出;

info = "My name is %s, and age is %d",%(name,age)

! (3) 使用format进行输出;

info = "My name is {_name},and age is {_age}".format(_name=name,_age=age);

!(4) 使用对应顺序;一一对应,上一种功能模式顺序可以调换;

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info = "My name is {0},and age is {1}".format(name,age)

5.for/while:循环;

# _age = 25
# age = int(input("age:"))
# if age == _age :
#     print("You got it! ")
# elif age > _age:
#     print("Think smaller")
# else:
#     print("Think bigger!")

# _age = 25
# count = 0
# while count < 3:
#     age = int(input("age:"))
#     if age == _age:
#         print("You got it! ")
#         break
#     elif age > _age:
#         print("Think smaller")
#     else:
#         print("Think bigger!")
#     count += 1
#     if count == 3:
#         cont_or_not = input("Do you want to continue or not?")
#         if cont_or_not != 'N':
#             count = 0
#         else:
#             break

for i in range(0,10,3):
    print(i)

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转载自www.cnblogs.com/roarlion/p/12758325.html