Python is an interpreted and general purpose programming language. It is a Object-Oriented and Procedural paradigms programming language. There are various types of modules imported in python such as difflib, hashlib.

Modules used:

• difflib: It is a module that contains function that allows to compare set of data.
• SequenceMatcher : It is used to compare pair of input sequences.

Function Used:

• hash_file ( string $algo , string $filename , bool $binary = false ):It is a function which has the hash of a file.
• object.hexdigest():It is a function which returns string.
• fileObject.read(size):It is a function that returns the specified number of bytes of a file.

Approach

• Import module
• Declare a function with 2 arguments which is for file.
• Declare two objects for hashlib.sha1()
• Open files
• Read the file by breaking the line into smaller chunks
• Now return both file such as h1.hexdigest() which is of 160 bits.
• Use hash_file() function to store the hash of a file.
• Compare and generate appropriate message

Files in Use

• File 1

• File 2

Program:

importhashlibfromdifflibimportSequenceMatcherdefhash_file(fileName1,fileName2):# Use hashlib to store the hash of a fileh1=hashlib.sha1()h2=hashlib.sha1()withopen(fileName1,"rb")asfile:# Use file.read() to read the size of file# and read the file in small chunks# because we cannot read the large files.chunk=0whilechunk!=b'':chunk=file.read(1024)h1.update(chunk)withopen(fileName2,"rb")asfile:# Use file.read() to read the size of file a# and read the file in small chunks# because we cannot read the large files.chunk=0whilechunk!=b'':chunk=file.read(1024)h2.update(chunk)# hexdigest() is of 160 bitsreturnh1.hexdigest(),h2.hexdigest()msg1,msg2=hash_file("pd1.pdf ","pd1.pdf")if(msg1!=msg2):print("These files are not identical")else:print("These files are identical")

Output

These files are not identical

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