Writing to a file in Python programming language

One of the fundamental skills in Python programming is writing data to a file, which is essential for storing large amounts of data, processing and analyzing it later, and sharing information with others. Writing to a file in Python can be done using a variety of methods, and this tutorial will cover them all in detail, including opening and closing files, writing and appending to files, handling errors, and formatting output. By the end of this tutorial, you will be able to write to any type of file using Python with ease.

Different modes for Writing the file in Python :

Steps for Writing Data into a File in Python :

• Open a file in write mode, using the open() method.
• Write data to a file, using the appropriate write method.
• Close the file using the close() method.

How to write to a text file in python :

• This code writes a string of text to a file named example.txt, using the write() method.

# Writing to a text file
file = open("example.txt", "w")
file.write("Hello, world!")
file.close()

Different write methods in  python : 

• write() : Writes a string of characters to a file.
• writelines() : Writes a list of lines to a file.

write() Method : 

• Writes a string of characters to a file.
• Sample code for using write() method

file = open("example.txt", "w")
file.write("This is a line of text.")
file.close()

writelines() Method : 

• Write a list of lines to a file
• Sample code for using writelines() method

list_of_lines = ["This is line 1.", "This is line 2.", "This is line 3."]
with open("example.txt", "w") as file:
 	file.writelines(list_of_lines)
 
 
 

Using with statement to write a file : 

• The with statement can also be used when writing to a file
• It will automatically close the file after the code block has finished executing.
• Example code for using with statement to write to a file

with open("example.txt", "w") as file:
 	file.write("This is a line of text.")
 
 

How to write to a binary file in python :

• This code writes binary data to a file named example.bin using the wb mode.

# Writing to a binary file
with open("example.bin", "wb") as file:
 file.write(b"\x48\x65\x6c\x6c\x6f\x20\x57\x6f\x72\x6c\x64\x21") 

 # hexadecimal representation of "Hello World!"