python的标准输入

import sys
for i in sys.stdin:
    print(i)
i = sys.stdin.readlines()
print(i,type(i))
i = sys.stdin.read()
print(i,type(i))
import fileinput
for line in fileinput.input():
    print(line)
    print(fileinput.filename())
    print(fileinput.filelineno())
    print(fileinput.isfirstline())

 

 

字符串之前没怎么用的方法

s = "abcdefga"


res = s.find("a")

print(res)
res = s.rfind("a")

print(res)
res = s.index("a")

print(res)

res = s.rindex("a")

print(res)