Python File Open
Open a File on the Server
Assume we have the following file, located in the same folder as Python:
This file is for testing purposes.
To open the file, use the built-in
open() function returns a file object, which has a
read() method for reading the content of the file:
Read Only Parts of the File
By default the
read() method returns the whole text, but you can also specify how many characters you want to return:
Return the 5 first characters of the file:
You can return one line by using the
Read one line of the file:
readline() two times, you can read the
two first lines:
Read two lines of the file:
By looping through the lines of the file, you can read the whole file, line by line:
Loop through the file line by line:
for x in f:
It is a good practice to always close the file when you are done with it.
Close the file when you are finish with it:
Note: You should always close your files, in some cases, due to buffering, changes made to a file may not show until you close the file.