Python File Handling
File handling in Python refers to operations performed on files, such as reading from or writing to them. You can open files using the `open()` function, specify modes like 'r' for reading or 'w' for writing, manipulate file content using methods like `read()`, `write()`, and `close()` to manage resources properly.
Modes in Python file handling dictate how a file is opened and manipulated
'r': Read'w': Write (truncate existing or create new)'a': Append'x': Create
Read file
f = open("demofile.txt", "r")
print(f.read())
f.close()
Read Only Parts of the File
# Read file
f = open("demofile.txt", "r")
print(f.read(6))
print(f.readline())
print(f.readline())
f.close()
Append content to the file
#Append file
f = open("demofile2.txt", "a")
f.write("Now the file has more content!")
f.close()
#open and read the file after the appending:
f = open("demofile2.txt", "r")
print(f.read())
f.close()
Overwrite the content
#Write file
f = open("demofile3.txt", "w")
f.write("Woops! I have deleted the content!")
f.close()
#open and read the file after the overwriting:
f = open("demofile3.txt", "r")
print(f.read())
f.close()
Create an empty file
#Create file
f = open("myfile.txt", "x")
Delete a file
import os
#Delete file
import os
if os.path.exists("myfile.txt"):
os.remove("myfile.txt")
else:
print("The file does not exist")