Sample code to read a file

Whenever you open a file using one of these modes, the file offset is set to the EOF. So, you can write the new content or text next to the existing content. If you run this example the first time, then it creates the file. So far, two lines have been added to the file. The second write operation indicates a successful append.

So, close it, open, and then do a read operation. For reading a text file, Python bundles the following three functions: read , readline , and readlines. If no value is given, then it reads the file till the EOF. It restricts to one line per call even if N is more than the bytes available in one line. It is so easy to use the Python read file functions that you can check yourself.

Please note that the Python seek function is needed to change the position of file offset. It decides the point to read or write in the file. In order to release all the resources and free the allocated memory close function is used. We have used the if and else statement to check whether the file is [resent or not. If the file is not found, a proper message is displayed on the console. In order to release all the resources and free the memory, the close function is used. As working with files is very common in the practical world, it is very important to understand each and every file operation deeply before using them.

You may also have a look at the following articles to learn more —. Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy. The Console window displays the contents of the Sample. The following code uses the StreamWriter class to open, to write, and to close the text file. In a similar way to the StreamReader class, you can pass the path of a text file to the StreamWriter constructor to open the file automatically.

The WriteLine method writes a complete line of text to the text file. This code creates a file that is named Test. Open Test. Unlike the previous example, this code passes two additional parameters to the constructor. The first parameter is the file path and the file name of the file. The second parameter, true , specifies that the file is opened in append mode.

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