???????????????

??????????????????????????????????????????????????????????????????????????з???????Щ?????????????????????????????????????????????????

??????????????????????str?????????????Щ???????????????????????????????????????Щ???????????б????μ?help(str)??

??????????

??9.7 ??????????

#!/usr/bin/python
# Filename: str_methods.py

name = 'Swaroop' # This is a string object

if name.startswith('Swa'):
    print 'Yes, the string starts with "Swa"'

if 'a' in name:
    print 'Yes, it contains the string "a"'

if name.find('war') != -1:
    print 'Yes, it contains the string "war"'

delimiter = '_*_'
mylist = ['Brazil', 'Russia', 'India', 'China']
print delimiter.join(mylist)

????????code/str_methods.py??

???

$ python str_methods.py
Yes, the string starts with "Swa"
Yes, it contains the string "a"
Yes, it contains the string "war"
Brazil_*_Russia_*_India_*_China

????ι???

??????????????????????????????startwith?????????????????????????????????????in????????????????????????????????????????????????

find?????????????????????????????????е?λ??????????-1??????????????????str????????????????????????join???е??????????????????????????????????????