import bz2 with bz2.open('somefile.bz2','wt') as f: f.write(text) 1. 2. 3. 4. 5. 6. 7. 8. 4.读取二进制数据到可变缓冲区 应用场景:需要直接读取二进制数据到一个缓冲区,而不需要做任何的中间复制操作 解决方案:使用文件对象的readinto()方法 示例 import os.path def read_into_buffer(f...
file.read(): This method reads the entire content of the file into a string. Here, file_content will contain the entire text of example.txt. 3. Using readlines() For larger files, we can use the readlines() method, which reads the file line by line Using readline() method Python 1 ...
delete=True)astemp_file:# 将数据写入临时文件temp_file.write('Hello, this is a temporary file.')# 刷新缓冲区并将文件指针移到开头temp_file.flush()temp_file.seek(0)# 从临时文件中读取数据print(temp_file.read())# 在with语句块执行完毕后,由于delete参数设置为True,# Python会自动删除这个临时...
"age":obj.age}raiseTypeError("Object of type 'Person' is not JSON serializable")# 创建一个Person实例person_instance=Person(name="Emma",age=28)# 序列化为JSON字符串json_string_custom=json.dumps(person_instance,default=person_encoder,indent=2)print(json_string_custom)...
f=open('myfile.txt','r',encoding='utf-8')#内存中的文本流可以使用StringIO对象来创建 f1=io.StringIO("some initial text datal")print(f1.getvalue())#读取文本流信息 (1)class io.TextIOBase 文本流的基类,这个类提供了一个基于字符和行的接口流IO,没有readinto()方法,因为python的字符串是不可变...
read()) # 读取内容 with open("text_2.txt", "w+", encoding="utf-8") as f2: f2.write("Test") # 写入内容 f2.seek(0) # 回到起始位置 print("w+:", f2.read()) # 读取内容 执行结果: C:\Users\dengf\anaconda3\python.exe I:\dengf_Network_Engineer_Python\文件读取模式\test.py...
def load_text(filepath): with open(filepath, 'r', encoding='utf-8') as f: return f.read() # 2. 文本清洗 def clean_text(text): text = re.sub(r'[\s\n\r\u3000]+', '', text) return re.sub(r'[^一-龥,。!?、:;‘’"“”()《》]', '', text) # 3. 分词处理 def ...
The converted string """r_str = input_str.replace('\r\n','\n')returnr_strdefdos2unix(source_file:str, dest_file:str):"""\ Coverts a file that contains Dos like line endings into Unix like Parameters --- source_file The path to...
__读取到缓冲区,不要用,将被遗弃Python 3.x已经没有改功能"""readinto() -> Undocumented. Don't use this; it may go away."""passdefreadline(self, size=None):#real signature unknown; restored from __doc__仅读取一行数据"""readline([size]) -> next line from the file, as a string....
next() ValueError: I/O operation on closed file 代码语言:javascript 代码运行次数:0 运行 AI代码解释 In [50]: f1=open('/etc/passwd','r') In [51]: f1. f1.close f1.isatty f1.readinto f1.truncate f1.closed f1.mode f1.readline f1.write f1.encoding f1.name f1.readlines f1....