Learn how to Learn a File in Python

If that you must learn a file in Python, then you should use the open() built-in perform that can assist you.

Let’s say that you’ve got a file known as somefile.txt with the next contents:

Whats up, this can be a check file
With some contents

Learn how to Open a File and Learn it in Python#

We are able to learn the contents of this file as follows:

f = open("somefile.txt", "r")
print(f.learn())

This may print out the contents of the file.

If the file is in a special location, then we might specify the placement as properly:

f = open("/some/location/somefile.txt", "r")
print(f.learn())

In the event you don’t need to learn and print out the entire file utilizing Python, then you may specify the precise location that you just do need.

f = open("somefile.txt", "r")
print(f.learn(5))

This may specify what number of characters you need to return from the file.

If that you must learn every line of a file in Python, then you should use the readline() perform:

f = open("somefile.txt", "r")
print(f.readline())

In the event you known as this twice, then it could learn the primary two traces:

f = open("somefile.txt", "r")
print(f.readline())
print(f.readline())

A greater approach to do that, is to loop by way of the file:

f = open("somefile.txt", "r")
for x in f:
  print(x)

It’s all the time good apply to shut a file after you’ve got opened it.

It is because the open() methodology, will maintain a file handler pointer open to that file, till it’s closed.

f = open("somefile.txt", "r")
print(f.readline())
f.shut()