1. python的输入与输出
name = input("name:") 输入name,默认的类型为字符串类型
age = int(input("age:")) 强制类型转化为int类型
print(type(age)) 输出变量的类型
字符拼接输出:
#第一种格式:
info = '''
------- info of %s ------
Name:%s
Age:%d
Job:%s
Salary:%s
''' % (name, name, age, job, salary)
#第二种格式
info = "'
------info of {_name} ------
Name:{_name}
Age:{_Age}
Job:{_Job}
Salary:{_salary}
'''.format(_name = name,
_age = age,
_job = job,
_salary = salary)
#第三种格式
info = '''
------info of {0} ------
Name:{0}
Age:{1}
Job:{2}
Salary:{3}
'''.format(name, age, job, salary)
2. 登陆时隐藏密码
import getpass
passwd = getpass.getpass("passwd:")
3. 判断语句
if guess_age == age_of_oldboy:
print("yes,you got it") #缩进和java的括号作用相同
break
elif guess_age > age_of_oldboy:
print("think smaller...")
else:
print("think bigger...")
4. 循环语句
4.1 for 循环
for i in range(0,10,2)
print("loop", i)
else:
#正常(非break)结束时候执行此处代码,break结束时不执行此代码
4.2 while循环
while True:#死循环
while count < 3:
else:
#正常结束时执行此处代码