pythonで標準入出力

import sys

count = 0
for line in sys.stdin:
    count = count + 1
print(count)

import sys

dic={}
for line in sys.stdin:
    col = line.split(",")
    print(col[1])
    if col[1] not in dic.keys():
        dic[col[1]] = 1
    else:
        dic[col[1]] += 1

print(dic)

import sys

for line in sys.stdin:
    if "201408" in line :
        print(line)
        

import sys

for line in sys.stdin:
    col = line.split(",")
    print(col[1].replace("2014","2023"))