pythonCopy codedefread_specific_line(filename,line_number):withopen(filename,'r')asfile:forline_num,lineinenumerate(file,1):ifline_num==line_number:returnline.rstrip()filename='example.txt'line_number=3line_content=read_specific_line(filename,line_number)print(f'第{line_number}行内容:{line...
Following is an example to read a text file line by line using while loop −file = open("TutorialsPoint.txt", "r") while file: line = file.readline() print(line) if line == "": break file.close() OutputFollowing is an output of the above code −Welcome to Tutorials Point This...
A common way to read a file in Python is to read it entirely and then process the specific line. Reading a file in Python is fast; for example, it takes roughly 0.67 seconds to write a 100MiB file. But if the file size exceeds 100 MB, it would cause memory issues when it is read...
Theopen()function opens the file named ‘data.txt‘ in read mode. Theforloop iterates over each line in the file, and in each iteration, the current line is assigned to the variableline. When dealing with files in a specific encoding (e.g., UTF-8), we can specify it using theencod...
python read_first_line.py Output: The first line of the file is: This is the first line of the text file. Conclusion Reading the first line of a text file in Python can be achieved through various methods, each offering its advantages. The choice of method depends on the specific use...
Method 4: Read a text file into a string variable in Python using list comprehension We can also uselist comprehension in Pythonto read specific lines or apply transformations while reading from a text file. Scenario: We have a file listing US cities, but we’re only interested in cities wi...
read() print(content) file.close() Output Dear User, Welcome to Python Tutorial Have a great learning !!! Cheers Example 2 – Read the Specific Length of Characters in a Text File Using the read() Function There are times where you need to read the specific bytes in a file. In ...
Throughout the Python content in Minecraft, there will be numerous opportunities for students to learn and apply the specific syntax to run Python code successfully. Activity Here's a sample of Python code. if agent.inspect("forward") == "diamond ore" ...
template.current_line, msg))returnfile_list.filesfinally: template.close() 开发者ID:jcfr,项目名称:PyCMake,代码行数:30,代码来源:__init__.py 示例5: read_from_file ▲点赞 1▼ # 需要导入模块: from distutils.text_file import TextFile [as 别名]# 或者: from distutils.text_file.TextFile im...
Python readline()is a file method that helps to read one complete line from the given file. It has a trailing newline (“\n”) at the end of the string returned. You can also make use of the size parameter to get a specific length of the line. The size parameter is optional, and...