Pythonの基礎知識文字列の学習まとめ

var1="Big data"
var2='openstack'
需要注意的是在python里面双引号（""）与单引号（''）表示的含义完全相同，并不会存在像Shell里面
单引号和双引号不一致的问题。

#!/usr/bin/env python
#_*_coding:utf-8_*_
print('----***字符串格式化输出***----')
"""name= input("input your name:")
password=input("inpur your password：")
print("your name: %s \nyour password: %s" %(name,password))
"""
name= input("input your name:")
age= input("input your age:")
job= input("input your job:")
salary= input("input your salary:")
print('----***字符串格式化输出 字符串拼接法***----')
"""字符串拼接法万恶的字符串拼接：
python中的字符串在C语言中体现为是一个字符数组，每次创建字符串时候需要
在内存中开辟一块连续的空，并且一旦需要修改字符串的话，就需要再次开辟空间，
万恶的+号每出现一次就会在内从中重新开辟一块空间。 """
 
info='''  --- info  of '''  + name +  '''   ---
name:'''  + name +  '''
age:'''  + age +  '''
job:'''  + job +  '''
salary:'''  + salary +  '''
 
'''
print(info)

----***字符串格式化输出***----
input your name:python
input your age:20
input your job:linux sa
input your salary:20000
----***字符串格式化输出 字符串拼接法***----
  --- info  of python   ---
name:python
age:20
job:linux sa
salary:20000
 
Process finished with exit code 0

#!/usr/bin/env python
#_*_coding:utf-8_*_
print('----***字符串格式化输出***----')
name= input("input your name:")
age= input("input your age:")
job= input("input your job:")
salary= input("input your salary:")
print('----***字符串格式化输出***----')
#print('name: %s\nage: %d\njob: %s\nsalary:%s ' %(name,int(age),job,salary))
print("""
name: %s
age: %d
job: %s
salary:%s """ %(name,int(age),job,salary))
print('----***字符串格式化输出 format 可以不带参数但是适合参数比较少***----')

input your name:baidu
input your age:22
input your job:99
input your salary:44
----***字符串格式化输出***----
 
name: baidu
age: 22
job: 99
salary:44 
----***字符串格式化输出 format 可以不带参数但是适合参数比较少***----
 
Process finished with exit code 0

#!/usr/bin/env python
#_*_coding:utf-8_*_
#!/usr/bin/env python
#_*_coding:utf-8_*_
print('----***字符串格式化输出***----')
name= input("input your name:")
age= input("input your age:")
job= input("input your job:")
salary= input("input your salary:")
 
info3=""" -------******info of {_name}-------******
name:{_name}
age:{_age}
job:{_job}
salary:{_salary}
 
""".format(_name=name,
           _age=age,
           _job=job,
           _salary=salary)
print(info3)
 
info4=""" -------******info of {0} 该方式适合变量少的情况括号是花括号-------******
name:{0}
age:{1}
job:{2}
salary:{3}
 
""".format(name,age,job,salary
          )
print(info4)

input your name:linux
input your age:mysql DBA
input your job:mysql DBA
input your salary:30000
 -------******info of linux-------******
name:linux
age:mysql DBA
job:mysql DBA
salary:30000
 
 
 -------******info of linux 该方式适合变量少的情况括号是花括号-------******
name:linux
age:mysql DBA
job:mysql DBA
salary:30000
Process finished with exit code 0