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Computers are mostly used to store information and extract information from it. Python is one of the most powerful programming languages. We can use Python to get computers to do most of the routine processes. There is no need to import modules from outside sources because Python comes with a number of built-in functions for manipulating files using file objects. An operating system’s ability to handle files is its most important feature. In this blog, we will learn about how to overwrite file in Python.
How Can You Overwrite File in Python?
Approach 1: Utilize file.truncate()
file.truncate() is a common way to overwrite file in Python. We can delete the file’s content using the truncate()
function. To accomplish this, we must make sure the file pointer is at the beginning of the file. We utilize the file to accomplish this. Set the pointer to the start using the seek()
method.
When the file is opened in read-only mode, this approach is appropriate. For example:
with open('file.txt','r+') as f:
f.seek(0)
f.write("upload file")
f.truncate()
The file’s content:
upload file
Approach 2: Utilize w
parameter and open()
The files can be opened in a variety of ways. The three available modes are write (w
), read (r
), and append (a
). The previous contents of the file are deleted when we open the file in write mode, allowing us to write data to it.
with open('file.txt','w') as f:
f.write("upload filee")
The file’s content:
upload file
Approach 3: Utilize the replace()
We can substitute a given string with another string using the replace()
function. Using this function, we can replace a certain phrase in an existing file and overwrite it. Consider the below example:
f1 = open('myfile.txt','r')
data = f1.read()
data = data.replace('abc','def')
f1.close()
f2 = open('myfile.txt','w')
f2.write(data)
f2.close()
The file’s content:
replaced string def
Approach 4: Utilize os.remove()
os.path.exists()
function to examine whether a stated file appears or not. If that file exists, we can excude it with the os.remove()
function. Then a new file with the same name is created, and data is written into it.import os
if (os.path.exists("myfile.txt")):
os.remove("myfile.txt")
else:
print("File Does Not Exists")
f = open("myfile.txt", "w")
f.write('ABC')
f.close()
ABC
Conclusion
”Overwrite file in Python” is a confusing problem. We hope this blog has helped clear the air around how to do it. If you have more questions about this topic, please leave a comment below. Thank you for reading, we are always excited when one of our posts can provide useful information on a topic like this!
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