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WHAT IS FILE MANAGEMENT IN PYTHON.
Sulochana Kamshetty
9 months ago
FILE MANAGEMENT IN PYTHON
In this article, we will try to learn about a new topic i.e., WHAT IS FILE MANAGEMENT IN PYTHON.
For adding the more informative knowledge of python world, understanding about file management in python will also take some examples.
In Python, there is no need for importing external library to read and write files. Python provides an inbuilt function for creating, writing, and reading files
Come Let us understand the key points of why one
has to know about
1. File management in python,
2. Uses and its importance of file
management,
3. Where and when file management
is used in real-time.
Evolution of file management:
The first management system introduced in 1960’s. This was
actually the proof of concept, in which the feasibility of storing large amount
of data was shown. It’s the management system,, in which all data is stored on a
single large file as indicated from its name.
having an effective computer filing system, can make a huge
difference in your everyday life. Firstly, it helps to save time, but most
importantly, it helps you to be more organized
We use open () function
in Python to open a file in read or write mode.
As explained above, open ( ) will return a file object. To
return a file object we use open() function
along with two arguments, that accepts file name and the mode, whether to read
or write. So, the syntax being: open(filename,
mode). There are three kinds of mode, that Python provides and how files
can be opened:
Not only read and write
the file we even can do multiple task like:
1. Creating
a file using write() mode
2. Working of append() mode
3. Using write along with the () function
4. split() using file handling
Now
lets understand the important aspects of file management those are
“ r “,
for reading.
“ w “,
for writing.
“ a “,
for appending.
“ r+ “,
for both reading and writing
Lets look about the coding part now
# a file named
"insideaiml", will be opened with the reading mode.
file = open('inisdeaaiml.txt', 'r')Output:- This will open the file which is stored as insideaiml.txt in reading mode
This will print every line one by one in the file
for each in file:
print (each)
There are more than one
way to read a file in Python. If you need
to extract a string that contains all characters in the file then we
can use file.read(). The
full code would work like this:
Python code to illustrate
read() mode
file = open("insideaiml.text", "r")
print (file)Output:- this command will help us to open the file with the help of reading mode & print option will help us to open the file in reading mode
Another way to read a file is to call a certain number of
characters like in the following code the interpreter will read the first
five characters of stored data and return it as a string:
- filter_none
- edit
- play_arrow
- brightness_4
Python code to
illustrate read() mode character wise
file = open("file.txt","r")
print(file.read(5))Output:-
The open command will open
the file in the read mode and the for loop will print each line present in the
file.
Creating a file using write() mode
Let’s see how to create a file and how to write mode works:
To manipulate the file, write the following in your Python environment:
To manipulate the file, write the following in your Python environment:
Python code to create a file
file = open('insideaiml.txt','w')
file.write("This is the write command")
file.write("It allows us to write in a particular file")
file.close()Output:- The close() command terminates all the resources in use and
frees the system of this particular program.
Working of append() mode
Let’s see how the append mode works:
Python code to illustrate append() mode
file = open('insideaiml.txt','a')
file.write("This will add this line")
file.close()Output:- So append function helps in adding the additional
information even after creating the code to the existing one
now lets check with with()function
Using write along with with()
function
Python code to illustrate with() along with write()
with open("file.txt", "w") as f:
f.write("Hello World!!!")
split() using file handlingOutput:- this function helps
us and concatenating the new information to the existed created file.
let us understand how to use split functions works in
python…
We can also split lines using file handling in Python. This
splits the variable when space is encountered. You can also split using any
characters as we wish. Here is the code:
Python code to illustrate split() function
with open("file.text", "r") as file:
data = file.readlines()
for line in data:
word = line.split()
print wordOutput:-
There are also various other functions that help to
manipulate the files and its contents. One can explore various other functions
in Python Docs.
There are also various other commands in file handling that
is used to handle various tasks like:
- rstrip(): This function strips each line of a file off spaces from the right-hand side.
- lstrip(): This function strips each line of a file off spaces from the left-hand side.
It is designed to provide much cleaner syntax and exceptions
handling when you are working with code. That explains why it’s good practice
to use them with a statement where applicable. This is helpful because using
this method any files opened will be closed automatically after one is done, so
auto-cleanup.
I hope you enjoyed reading this article and finally, you came
to know about What is File Management in Python.
For more such blogs/courses on data science, machine
learning, artificial intelligence and emerging new technologies do visit us at InsideAIML.
Thanks for reading…
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