python(day01)

day01

Python的发展 1991 荷兰人Guido van Rossum
变量不用强制定义类型
ASCⅡ码表 255 1bytes
关于汉字 GB2312 7445 GBK GB18030
Unicode 2bytes
utf-8 en:1bytes zh:3bytes

用户交互：导入getpass 密码密文
import getpass
username ="lbb"
password ="123"

_username =input("username")
_password =getpass.getpass("password")

print(_username,_password)

---------------------------------------------------------|

单行注释用#
多行注释用'''或"""
%s字符串 %d整数 %f浮点数

name=input("name:");
age=int(input("age:"))#强制类型转换
job=input("job:")
salary=salary("salary:")

info1="------------info of %s-----------------
name:%s
age:%d
job:%s
salary:%s
".%{name,name,age,job,salary}
print(info1)

info2="------------info of {0}-----------------
name:{0}
age:{1}
job:{2}
salary:{3}
".format(name,age,job,salary)
print(info2)

info3="------------info of {_name}-----------------
name:{_name}
age:{_age}
job:{_job}
salary:{_salary}
".format(_name=name,_age=age,_job=job,_salary=salary)
print(info3)

---------------------------------------------------------|

if elif else判断

oldboy_of_age =45

_oldboy_of_age=input("oldboy_of_age:")

if _oldboy_of_age==oldboy_of_age:
print("Yes, you get it!")
elif _oldboy_of_age>oldboy_of_age:
print("think smaller...")
else:
print("think bigger...")

---------------------------------------------------------|

while for循环

oldboy_of_age=45
count=0

--------------------while---------------------

while count<3:
_oldboy_of_age = int(input("oldboy_of_age:"))
if _oldboy_of_age==oldboy_of_age:
print("Yes, you get it!")
break
elif _oldboy_of_age>oldboy_of_age:
print("think smaller...")
else:
print("think bigger!")
count+=1
if count == 3:
continue_confirm=input("Do you want to keep guessing..?")
if continue_confirm !="n":
count=0
#else:
# print("You have tired too many. fuck off")

--------------------for-----------------------

oldboy_of_age=45

for i in range(0,3,1):
_oldboy_of_age = int(input("oldboy_of_age:"))
if _oldboy_of_age==oldboy_of_age:
print("Yes, you get it!")
break
elif _oldboy_of_age>oldboy_of_age:
print("think smaller...")
else:
print("think bigger!")

else:
print("You have tired too many. fuck off")