python 变量定义和打印输出实例

1、基础参数定义实例
print("hello world")

name = "PaoChe Ge"

name2 = name

duohang = \'\'\'
print("My name is",name)

name = "Mr Li"

print(name2,"and",name)
\'\'\'

print(duohang)  #打印duohang 多行！

username = input("username:")
password = input("password:")
print(username,password) #打印多个参数

2、打印输出：

name = input("name:")
age = int(input("age:") )
print(type(age) , type( str(age) ))
job = input("job:")
salary = input("salary:")

#不建议这种拼接方式，效率低下
info = \'\'\'
---------------info of ----------
Name: \'\'\' + name + \'\'\'
Age: \'\'\' + age + \'\'\'
Job:\'\'\'+ job + \'\'\'
Souru:\'\'\'+ souru +\'\'\'
\'\'\'


info1 =\'\'\'
---------------info of %s ----------
ame:%s
Age:%d
Job:%s
Salary:%s
\'\'\' % (name,name,age,job,salary)


info2 = \'\'\'  #建议这种方式
---------------info of {_name} ----------
Aame:{_name}
Age:{_age}
Job:{_job}
Salary:{_salary}
\'\'\'.format(_name=name,
            _age=age,
            _job=job,
            _salary=salary)

info3 = \'\'\'
---------------info of {0} ----------
Aame:{0}
Age:{1}
Job:{2}
Salary:{3}
\'\'\'.format(name,age,job,salary)
#print(info1)
print(info3)