文本操作
# 讀取utf-8編碼數據，【轉換】成unicode（str）編碼的數據
# obj = open(‘D:\美女模特空姐護士聯系方式.txt‘,encoding=‘utf-8‘,mode=‘r‘)
# content = obj.read()
# obj.close()
# print(content,type(content))

# obj = open(‘D:\美女模特空姐護士聯系方式.txt‘,mode=‘rb‘)
# content = obj.read()
# obj.close()
# print(content,type(content))

# 1. 文件在硬盤上時，一定是：utf-8,gbk......
 

# 2. rb, bytes,                  rb
# 3. r,  轉換encoding=utf-8      r   encoding:utf-8

# 讀文件
# obj = open(‘D:\\n美女模特空姐護士聯系方式.txt‘,encoding=‘utf-8‘,mode=‘r‘)
# content = obj.read() # 字符串類型
# obj.close()
# print(content,type(content))

# obj = open(‘D:\美女模特空姐護士聯系方式.txt‘,mode=‘rb‘)
# content = obj.read() # bytes類型
 

# obj.close()
# print(content,type(content))

# obj = open(‘log‘,mode=‘rb‘)
# data = obj.read()
# obj.close()
#
# obj = open(‘log‘,mode=‘r‘,encoding=‘utf-8‘)
# data = obj.read()
# obj.close()
# print(data)

# obj = open(‘美女.txt‘,mode=‘w‘,encoding=‘utf-8‘)
# obj.write("海角-賈敏")
# obj.close()

# obj = open(‘美女.txt‘,mode=‘wb‘)
 

# obj.write("海角-賈敏22222".encode(‘utf-8‘))
# obj.close()


# obj = open(‘美女.txt‘,mode=‘a‘,encoding=‘utf-8‘)
# obj.write("小紅")
# obj.close()

# obj = open(‘美女.txt‘,mode=‘ab‘)
# data = obj.read()
# obj.close()
#
# print(data)

# obj = open(‘美女.txt‘,mode=‘r+‘,encoding=‘utf-8‘)
# data = obj.read(1) # 讀
# # 情況一：
# # obj.write(‘6‘) # 在最後繼續寫
# # 情況二：
# # obj.seek(1)
# # obj.write(‘6‘) # 定位到指定位置
# obj.close()
# print(data)





# obj = open(‘美女.txt‘,mode=‘r+‘,encoding=‘utf-8‘)
#obj = open(‘美女.txt‘,mode=‘r+‘,encoding=‘utf-8‘)
# data = obj.read()  # 讀取所有文件內容
# data = obj.read(2) # r,字符；rb,字節
# obj.write(‘字節或字符串‘)
# obj.seek(2)         # 永遠是字節，指定指針位置
# obj.tell()          # 讀取當前指針的位置
# 是否可寫
# obj.writable()
# 是否可讀
# obj.readable()
# 將內存中內容刷到硬盤
# obj.flush()
# obj.tell()
# data = obj.readline()
# print(data)
# data = obj.readline()
# print(data)
# 截取文件內容，根據指針位置，只保留指針之前數據
# obj.truncate()
# for line in obj:
#     print(line)
obj.close()

Python學習day7文件操作