withopen('example.txt','r')asfile:line_number=1line=file.readline()whileline:print(f"Line{line_number}:{line}")line_number+=1line=file.readline() 1. 2. 3. 4. 5. 6. 7. 运行上述代码后,我们将得到以下输出: Line 1: This is line 1
thefile thefile thefile thefile for item in thelist: thefile.write("%s\n"% item) thefile
5. fileinput Module – Files into a List Line by Line Thefileinputmodule is a built-in Python module that provides a way to read one or more files. It’s designed to be used as a command-line interface, but it can also be used in Python scripts. Example of how to use thefileinpu...
def read(self, size=None): # real signature unknown; restored from __doc__ 读取指定字节数据 """read([size]) -> read at most size bytes, returned as a string. If the size argument is negative or omitted, read until EOF is reached. Notice that when in non-blocking mode, less data ...
read() print(content) # 输出我们文件的内容,字符串 f.close() # 关闭文件对象 但是这个过程显得比较麻烦,因为我们每次要显式地关闭,这段代码没问题,但是不够pythonic,所以我们使用with来实现更加pythonic的代码。 with open('netdevops.txt', mode='r', encoding='utf8') as f: content = f.read() ...
#test2_1.py文件 with open("poems.txt",'rt',encoding='UTF-8') as file: str1=file.read(9) #size=9,但只能读取出8个字符 str2=file.read(8) #size=8,但可以读取出8个字符 str3=file.read() #同一个open()函数下,read()已经读取全部文件内容 print("str1:"+str1,"str2:"+str2,"str...
u= f.read().decode('DeyunCode') 三、文件和目录操作 在图形界面的操作系统下,这个很简单,就是右键/拖拽 等等。 但是在Python的代码内该怎么做呢? 基本操作 用Python内置的os模块直接调用操作系统提供的接口函数: import os os.name 这里是通过OS告诉我们 我的操作系统的名字。 如果是posix,说明系统是#nix族...
obfuscating identifiers.--nonlatin Use non-latin(unicode)charactersinobfuscation(Python3only).WARNING:This resultsinsomeSERIOUSLYhard-to-read code.--prepend=<file path>Prepend the textinthisfile to the topofour output.e.g.Acopyright notice. ...
strptime # === # Script configuration information start # error code OK = 0 ERR = 1 # Maximum number of device startup retries when there is no query result. GET_STARTUP_INTERVAL = 15 # The unit is second. MAX_TIMES_GET_STARTUP = 120 # Maximum number of retries. # Maximum number ...
使用pandas.read_excel()函数读取xlsx文件里的数据,却报错ImportError: Missing optional dependency ‘xlrd’. Install xlrd >= 1.0.0 for Excel support Use pip or conda to install xlrd. 4. 解决办法一 执行命令 pip install xlrd 安装相应的安装包 ...