pyrebase_database.py

import pyrebase
config = {
  "apiKey": "Your API Key",
  "authDomain": "YourprojectId.firebaseapp.com",
  "databaseURL": "https://YourdatabaseName.firebaseio.com",
  "storageBucket": "YourprojectId.appspot.com",
  "serviceAccount": "path/toyour/serviceAccountCredentials.json"
}
# initialisatiing pyrebase
firebase = pyrebase.initialize_app(config)

# initialisatiing Database
db = firebase.database()

# selecting the column in the database
db.child("users").child("Morty")

# How to save a data
data = {"name": "Mortimer 'Morty' Smith"}
db.child("users").push(data)

# How to update a existing data
db.child("users").child("Morty").update({"name": "Mortiest Morty"})

# Removing existing data
db.child("users").child("Morty").remove()

# reterving the data
users = db.child("users").get()
print(users.val()) #  retervies  this data => {"Morty": {"name": "Mortimer 'Morty' Smith"}, "Rick": {"name": "Rick Sanchez"}}

# reterving data using loops
all_users = db.child("users").get()
for user in all_users.each():
    print(user.key()) # Morty
    print(user.val()) # {name": "Mortimer 'Morty' Smith"}
    
# For getting a data in a particular path
all_users = db.child("users").get()

# some Complex quites

# ordering by child
users_by_name = db.child("users").order_by_child("name").get()

# equal to
users_by_score = db.child("users").order_by_child("score").equal_to(10).get()

# stating and ending
users_by_score = db.child("users").order_by_child("score").start_at(3).end_at(10).get()

# limiting form first to last 
users_by_score = db.child("users").order_by_child("score").limit_to_first(5).get()

# geting by key
users_by_key = db.child("users").order_by_key().get()

# getting by value
users_by_value = db.child("users").order_by_value().get()