Python学习Day1

北京实习元宵值班，学习Python基础

1.声明变量并赋值打印

name = "Hello World"
print(name)

2.交互输入变量值

name = input("Please input your name")

3.输出变量类型

name = "Hello World"
print(type(name))

4.变量类型转换

age = int(input("age:"))

例子:

name = input("name:")
age = int(input("age:"))
job = input("job:")
info = '''
---------info of %s ----------
Name:%s
Age:%s
Job:%s
'''%(name,name,age,job)
print(info)
info2 = '''
---------info of {_name} ----------
Name:{_name}
Age:{_age}
Job:{_job}
'''.format(_name=name,_age=age,_job=job)
print(info2)

5.if 用法

age = int(input("age:"))
if age == 40:
    print("Yes")
elif age < 40:
    print("small")
else:
    print("big")

6.while 用法（可以配合使用 else ）

count = 0
while count < 3:
    print(count)
    count += 1
else:
    print("Count is too biger")

例子：猜年龄

count = 0
while count < 3:
    guess_age = int(input("Guess age:"))
    if guess_age == age_of_oldboy:
        print("yes")
    elif guess_age < age_of_user:
        print("small")
    else:
        print("big")
    count += 1
    if count == 3:
        continue_confim = input("Do you want to go on?")
        if continue_confim != 'n':
            count = 0
else:
    print("The times is too much go out")

7.for 用法

#range 从 0 输出到 9
for i in range(10):
    print(i)