python基本数据类型及对象方法

string                                                     

1.strip

str_test=‘ Larry ‘

v=str_test.strip()
print(v)
v=str_test.lstrip()
print(v)
v=str_test.rstrip()
print(v)

2. index
print(str_test[2])

3.slice
print(str_test[2:5])

4.concat
a=‘123a‘
print(str_test+a)

5.upper lower isupper islower

v=str_test.upper()
print(v)
v=str_test.lower()
print(v)

v=str_test.casefold()
print(v)

v=str_test.islower()
print(v)
v=str_test.isupper()
print(v)

6.startswith endswith

str_test=‘larry‘
v=str_test.startswith(‘la‘)
print(v)
v=str_test.endswith(‘ry‘)
print(v)

7.capitalize
v=str_test.capitalize()
print(v)

8.count

v=str_test.count(‘r‘)
print(v)

8.center expandtabs

v=str_test.center(20,‘*‘)
print(v)

*******larrr********

str_test = ‘larr\tY\tqwe\nsad\tzxc\tlarr‘
v=str_test.expandtabs(20)
print(v)

larr Y    qwe
sad zxc  larr

list

dict

tuple