CSV File Handling in Python - Read, Write, Append in CSV File, CSV Module - Reader / Writer Object
In this tutorial we will learn Binary File Handling in Python
Types of File :-
Text File - Stores data in ASCII, UNICODE Format
Binary File - Stores data as in the format of the memory
CSV File - Stores Tabular Data separated by comma ','
Modes in File Handling :-
r: open an existing file for a read operation.
w: open an existing file for a write operation. If the file already contains some data then it will be overridden but if the file is not present then it creates the file as well.
a: open an existing file for append operation. It won’t override existing data.
r+: To read and write data into the file. The previous data in the file will be overridden.
w+: To write and read data. It will override existing data.
a+: To append and read data from the file. It won’t override existing data.
Import CSV Module
Opening file in python:-
open(path, mode) function opens the file with the specified path of file & opening mode
Perform Operations :-
reader = csv.reader(file_handle, delimiter)
read data from reader object
writer = csv.writer(file_handle, delimiter)
write data from writer object
writer.writerow(data)
writer.writerows(2D Data)
writerow() function - writes given data in CSV format in the CSV file
writerows() function - writes each row of the given 2D Data in CSV format in the CSV file
Closing file in python:-
close() function closes the file & pushes/makes all the changes in the file.
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