file python 3 code example

Example 1: python write to file

with open(filename,"w") as f:
  f.write('Hello World')

Example 2: python with file.open

# Reference https://docs.python.org/3/library/functions.html#open

# Method 1
file = open("welcome.txt", "r") # mode can be r(read) w(write) and others 
data = file.read()
file.close()

# Method 2 - automatic close
with open("welcome.txt") as infile:
  data = file.read()

Example 3: python file open

#there are many modes you can open files in. r means read.
file = open('C:\Users\yourname\files\file.txt','r')
text = file.read()

#you can write a string to it, too!
file = open('C:\Users\yourname\files\file.txt','w')
file.write('This is a typical string')

#don't forget to close it afterwards!
file.close()

Example 4: python write to file

with open("testfile.txt", "w") as f:
  # "w" - write into file
  # "r" - read into file
  # "+" - read and write into file
  f.write("Hello World")

Example 5: with open as file python

>>> with open('workfile') as f:
...     read_data = f.read()

>>> # We can check that the file has been automatically closed.
>>> f.closed
True