Python Read Files
Learn all about Python Read Files in this comprehensive tutorial.
- •Assume we have the following file, located in the same folder as Python:
- •You can also use the with statement when opening a file:
- •It is a good practice to always close the file when you are done with it.
- •By default the read() method returns the whole text, but you can also specify how many characters you want to return:
- •You can return one line by using the readline() method:
Open a File on the Server
Assume we have the following file, located in the same folder as Python:
To open the file, use the built-in open() function.
The open() function returns a file object, which has a read() method for reading the content of the file:
If the file is located in a different location, you will have to specify the file path, like this:
Using the with statement
You can also use the with statement when opening a file:
Then you do not have to worry about closing your files, the with statement takes care of that.
Close Files
It is a good practice to always close the file when you are done with it.
If you are not using the with statement, you must write a close statement in order to close 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:
Read Lines
You can return one line by using the readline() method:
By calling readline() two times, you can read the two first lines:
By looping through the lines of the file, you can read the whole file, line by line:
Module quiz
2 questionsWhich of the following is true about Python Read Files?
What is the most common pitfall when working with Python Read Files?
Answer all questions to submit.