open(filename, 'a+') python code example

Example 1: python read file line by line

with open("file.txt") as file_in:
    lines = []
    for line in file_in:
        lines.append(line)

Example 2: python read file

with open("file.txt", "r") as txt_file:
  return txt_file.readlines()

Example 3: python append to file

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

Example 4: 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()