文件操作
文件路径
d: est.txt
编码方式
utf-8 gbk。。。
操作方式
操作方式:只读,只写,追加,读写,写读.....
以什么编码方式储存的文件,就以什么编码打开进行操作。
只读:r rb
f = open('阿卡丽',mode='r',encoding='utf-8')
content = f.read()
print(content,type(content))
f.close()
# f = open('阿卡丽',mode='rb',)
# content = f.read()
# print(content)
# f.close()
r+ 读写
r+b 读写(以bytes类型)
# f = open('log',mode='r+',encoding='utf-8')
# print(f.read())
# f.write('大猛,小孟')
# f.close()
f = open('log',mode='r+b')
print(f.read())
f.write('大猛,小孟'.encode('utf-8'))
f.close()
只写:w
wb
# 先将源文件的内容全部清除,在写。
# f = open('log',mode='w',encoding='utf-8')
# f.write('附近看到类似纠纷')
# f.close()
f = open('log',mode='wb')
f.write('附近看到类似纠纷'.encode('utf-8'))
f.close()
w+
# f = open('log',mode='w+',encoding='utf-8')
# f.write('aaa')
# f.seek(0)
# print(f.read())
# f.close()
w+b
.......
追加
# f = open('log',mode='a',encoding='utf-8')
# f.write('鬼娃')
# f.close()
# f = open('log',mode='ab')
# f.write('鬼娃'.encode('utf-8'))
# f.close()
#绝对路径
# f = open('d:阿卡丽.txt',mode='r',encoding='UTF-8')
# content = f.read()
# print(content)
# f.close()
#bytes ---->str
# f = open('阿卡丽',mode='r',encoding='utf-8')
# content = f.read()
# f.write('fjsdlk')
# f.close()
# f = open('阿卡丽',mode='rb',)
# content = f.read()
# print(content)
# f.close()
# f = open('log',mode='r+',encoding='utf-8')
# print(f.read())
# f.close()
# f = open('log',mode='r+b')
# print(f.read())
# f.write('大猛,小孟'.encode('utf-8'))
# f.close()
#对于w:没有此文件就会创建文件
# f = open('log',mode='w',encoding='utf-8')
# f.write('骑兵步兵')
# f.close()
# 先将源文件的内容全部清除,在写。
# f = open('log',mode='w',encoding='utf-8')
# f.write('附近看到类似纠纷')
# f.close()
# f = open('log',mode='w+',encoding='utf-8')
# f.write('aaa')
# f.seek(0)
# print(f.read())
# f.close()
# f = open('log',mode='wb')
# f.write('附近看到类似纠纷'.encode('utf-8'))
# f.close()
# f = open('log',mode='a',encoding='utf-8')
# f.write('鬼娃')
# f.close()
#
# f = open('log',mode='a',encoding='utf-8')
# f.write('鬼娃')
# f.close()
# f = open('log',mode='a+',encoding='utf-8')
# f.write('鬼娃')
# f.seek(0)
# print(f.read())
# f.close()
# f = open('log',mode='ab')
# f.write('鬼娃'.encode('utf-8'))
# f.close()
#功能详解
# obj = open('log',mode='r+',encoding='utf-8')
# content = f.read(3) # 读出来的都是字符
# f.seek(3) # 是按照字节定光标的位置
# f.tell() 告诉你光标的位置
# print(f.tell())
# content = f.read()
# print(content)
# f.tell()
# f.readable() # 是否刻度
# line = f.readline() # 一行一行的读
# line = f.readlines() # 每一行当成列表中的一个元素,添加到list中
# f.truncate(4)
# for line in f:
# print(line)
# f.close()
# f = open('log',mode='a+',encoding='utf-8')
# f.write('鬼娃')
# count = f.tell()
# f.seek(count-9)
# print(f.read(2))
# f.close()
# with open('log',mode='r+',encoding='utf-8') as f,
# open('log',mode='w+',encoding='utf-8') as f1: