Demo of file operations in GridFS and MongoDB using Python

from pprint import pprint
import pymongo
from pymongo import MongoClient
import gridfs

client = MongoClient()

client = MongoClient('mongodb://localhost:27017/')

db = client['local']

fs = gridfs.GridFS(db)

for grid_out in fs.find({"filename": "grid_fs.txt"}, no_cursor_timeout=True):
    data = grid_out.read()

print(data)
OUT: b'Hello.\n'

# INSERTION

fileID = fs.put(open(r'/home/ashish/Desktop/workspace/jupyter/exp/files_1/insert_test.txt', 'rb'), 
               filename="insert_test.txt")

out = fs.get(fileID)
print(type(out))
print(out.length)
print(out.read())

OUT:
class 'gridfs.grid_file.GridOut'
16
b'Insertion test.\n'

fileID = fs.put( open(r'/home/ashish/Desktop/workspace/jupyter/exp/files_1/blue_rose.jfif', 'rb'), filename="blue_rose.jfif" )
out = fs.get(fileID)
print(type(out))
print(out.length)

OUT:
class 'gridfs.grid_file.GridOut'
6717

# RETRIEVAL

f_out_path = r'/home/ashish/Desktop/workspace/jupyter/exp/files_1/blue_rose_out.jfif'
with open(f_out_path, 'wb') as f:
    f.write(out.read())