Open Function in Python | Python File Operations | Python tutorials for beginners
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open() function in python:
1. This function is used to open a file .
2. after opening to perform the
writing operation, or reading operation,
or modify the data, delete the data.
3. The syntax is:
filepointer=open('filename','mode')
here,
filepointer is a object of the file.
filename is a name of the file.
mode indicates the file opening modes
i.e the file is opened for which purpose
in python the file opening modes are:
'w'..... to open a file for writing purpose.
if the file already exists then, to remove
the old data and to store the new data.
otherwise to create a new file.
'r'.....to open a file for reading purpose.
'a'.....to open a file for appending purpose
'w+'.... to open a file for writing and reading puposese.
'r+'..... to open a file for reading and appending .
to append the new data at the begining of the file.
'a+'.....to open a file for reading and appending .
to append the new data at the end of the file.
'x'...... to open a file for exclusively for writing operation.
if the file already exists, then,
it returns FileExistsError.
otherwise to create a new file.
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