How to open a python file code example

Example 1: open file python

with open('filename', 'a') as f: # able to append data to file
	f.write(var1) # Were var1 is some variable you have set previously
	f.write('data') 
	f.close() # You can add this but it is not mandatory 

with open('filename', 'r') as f: # able to read data from file ( also is the default mode when opening a file in python)

with open('filename', 'x') as f: # Creates new file, if it already exists it will cause it to fail

with open('filename', 't') as f: # opens the file in text mode (also is defualt)

with open('filename', 'b') as f: # Use if your file will contain binary data
  
with open('filename', 'w') as f: # Open file with ability to write, will also create the file if it does not exist (if it exists will cause it to fail)
  
with open('filename', '+') as f: # Opens file with reading and writing

# You can combine these as you like with the + for reading and writing

Example 2: py file open with

with open('output.txt', 'w') as file:  # Use file to refer to the file object

    file.write('Hi there!')

Example 3: python open and read file with

with open('pagehead.section.htm','r') as f:
    output = f.read()

Example 4: how to open a file in python

open("filename" , "mode")
# do whatever you want to do!!

Example 5: run python.py file

# save a file in text editor with .py
# open terminal, and change directories
# run the following command:
python3 file.py

Example 6: read and write to file python

file = open(“testfile.txt”, “r+”)