micropython 遍历读取txt文本获取行数

import time

import sys

fname="wifi.txt"

f = open(fname,encoding="utf-8")

count=len(f.readlines())

print("行数："+str(count))

f.seek(0)

for i in range(count):

    content = f.readline()

    print("\r{}".format({content}),end='')

    time.sleep(1.0)

# 关闭⽂件

f.close()

#下面这个代码只遍历读取不获取行数

import time

import sys

file_obj = open("wifi.txt")

all_lines = file_obj.readlines()

for line in all_lines:

  print(line)

file_obj.close()