python read file with option code example

Example 1: python file open modes

r for reading
r+ opens for reading and writing (cannot truncate a file)
w for writing
w+ for writing and reading (can truncate a file)
rb for reading a binary file. The file pointer is placed at the beginning of the file.
rb+ reading or writing a binary file
wb+ writing a binary file
a+ opens for appending
ab+ Opens a file for both appending and reading in binary. The file pointer is at the end of the file if the file exists. The file opens in the append mode.
x open for exclusive creation, failing if the file already exists (Python 3)

Example 2: how to write to an output file in pytion

#first arg is the name of the file
#second arg notes that the file is open to write to it
outputFile = open("fileName", "w")
#next line writes to the file
outputFile.write(str)
#remember to close opened files
outputFile.close()