how to print a file in python code example

Example 1: code for showing contents of a file and printing it in python

import os

with open("filename", "r+") as file:
    content = file.readline()
    while(content!=""):
      	print(content)
        content = file.readline()
    file.close

Example 2: python write to file

file = open(“testfile.txt”,”w”) 
 
file.write(“Hello World”) 
file.write(“This is our new text file”) 
file.write(“and this is another line.”) 
file.write(“Why? Because we can.”) 
 
file.close()

Example 3: python save output to file

with open("output.txt", "a") as f:
    print("Hello StackOverflow!", file=f)
    print("I have a question.", file=f)

Example 4: 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 5: python how to make a file to write to

# Basic syntax:
file_object = open("filename", "mode")
file_object.write("Data to be written")
file_object.close() 

# Example usage:
file_object = open("/path/to/my_filename.txt", "w") # w = write, r = read
file_object.write("Line of text to write")
file_object.close()

Example 6: python print file

import sys

# only this print call will write in the file
print("Hello Python!", file=open('output.txt','a'))

# not this one (std output)
print("Not written")

# any further print will be done in the file
sys.stdout = open('output.txt','wt')
print("Hello Python!")