DAY6：文件读取

文件读取：

 f = open("文件名","r",encoding="utf-8").read()#文件读取
 print(f)

写入文件：

 f = open("文件名","w",encoding="utf-8")#写文件，会把源文件内容覆盖
 data = f.write("当指间的深情融进一抹风月,当秋韵轻轻敲打着心窗，那满满的爱便弹奏出思念的音符")
  print(data)

追加文件内容：

 f = open("文件名","a",encoding="utf-8")#文件末尾追加内容,
 data = f.write("当指间的深情融进一抹风月,当秋韵轻轻敲打着心窗，那满满的爱便弹奏出思念的音符")
 print(data)

读取第一行文件：

 f = open("test_txt","r",encoding="utf-8")#读取文件第一行
 data = f.readline()
 print(data)

读取前几行：

 f = open("test_txt","r",encoding="utf-8")#读取前五行
 for i in range(5) :
     print(f.readline())

标记第几行：

 f = open("test_txt","r",encoding="utf-8")#标记第4行
 count = 0
 for i in f :
     if count == 4:
         print("我是第\033[1;31m{0}\033[0m行分割线".format(count))
         count += 1
         continue
     print(i)
     count +=1

读取任意几行：

 f = open("test_txt","r",encoding="utf-8")#读取第2到第7行之间内容
 count = 1
 for i in f :
     if count < 7 and count > 2:
         print(i)
         count += 1
     else:
         count += 1

文字逐个输出：

 f = open("test_txt","r",encoding="utf-8")#红色文字逐个以0.5s输出
 data = f.read()
 for i in data:
     time.sleep(.5)
     print("\033[1;31m\033[0m",i)

文件读取小游戏：

功能：

1.可调节文字显示时间，更改文字颜色

2.实时显示阅读进度

3.阅读完毕统计阅读字数

 import time
 f = open("test_txt","r",encoding="utf-8")#文字逐个以0.5s输出
 data = f.read()

 number = len(data)
 count = 1
 for i in data:
     number_1 = count / number
     number_2 = round(number_1,4)*100

     if count != number:
         time.sleep(.5)

         print("{0} >>>已阅读\033[1;36m{1}%\033[0m".format(i, number_2))
         count +=1
     else:
         print("阅读完毕您已阅读了\033[1;31m{0}%\033[0m个字".format(number))

文件修改：

 #  将文件里的"一"更改为"1"

 f = open("test_txt","r",encoding="utf-8")
 f_new = open("txt","w",encoding="utf-8")

 for i in f:
     if "一" in i:
         i = i.replace("一","{0}".format(1))
     f_new.write(i)