需求一:取文件的前几行:
f = open("yesterday","r",encoding="utf-8")
for i in range(5):
print(f.readline())
f = open("yesterday","r",enc需求一:取文件的前几行:
f = open("yesterday","r",encoding="utf-8")
for i in range(5):
print(f.readline())
f = open("yesterday","r",enc