PEP8 code style changes

python/drop_collection.py

@@ -9,5 +9,5 @@ client = MongoClient('localhost', 27017)
 db = client['sales']
 
 # Drop all collections.
-for collectionName in db.list_collection_names():
-    db[collectionName].drop()
+for collection_name in db.list_collection_names():
+    db[collection_name].drop()

python/drop_database.py

@@ -6,11 +6,11 @@ from pymongo import MongoClient
 client = MongoClient('localhost', 27017)
 
 # Drop all collections.
-for databaseName in client.list_database_names():
+for database_name in client.list_database_names():
 
     # Avoid trying to drop the system databases.
-    if databaseName in ["admin", "config", "local"]:
+    if database_name in ["admin", "config", "local"]:
         continue
 
-    print("Dropping database " + databaseName)
-    client.drop_database(databaseName)
+    print("Dropping database " + database_name)
+    client.drop_database(database_name)

python/planets_database.py

@@ -10,12 +10,12 @@ client = MongoClient('localhost', 27017)
 db = client['planets']
 
 # Create a collection.
-orbitData = db['OrbitData']
+orbit_data = db['OrbitData']
 
 # Load data from a JSON file.
-inputFile = open("planets.json")
-jsonData = json.load(inputFile)
-inputFile.close()
+input_file = open("planets.json")
+json_data = json.load(input_file)
+input_file.close()
 
 # Insert the documents into the collection.
-result = orbitData.insert_many(jsonData)
+result = orbit_data.insert_many(json_data)

python/planets_with_moons.py

@@ -12,27 +12,27 @@ db = client['planets']
 
 # Read the available collection names.
 print(">> Available collections:")
-for collectionName in db.list_collection_names():
-    print(collectionName)
+for collection_name in db.list_collection_names():
+    print(collection_name)
 print()
 
 if "OrbitData" not in db.list_collection_names():
     print("!! Error: the \"OrbitData\" collection was not found.")
     sys.exit(1)
 
-orbitData = db["OrbitData"]
+orbit_data = db["OrbitData"]
 
 # Print the names of the planets.
 print(">> The names of the planets:")
-for planet in orbitData.find({}, {'name': 1, 'Number of Moons': 2, '_id': 0}):
+for planet in orbit_data.find({}, {'name': 1, 'Number of Moons': 2, '_id': 0}):
     print(planet)
 print()
 
 
 # Print planets with moons.
 print(">> Planets with moons:")
-for planet in orbitData.find({'Number of Moons': {'$gt': 0}},
-                             {'name': 1, 'Number of Moons': 2, '_id': 0}
-                             ).sort('Number of Moons'):
+for planet in orbit_data.find({'Number of Moons': {'$gt': 0}},
+                              {'name': 1, 'Number of Moons': 2, '_id': 0}
+                              ).sort('Number of Moons'):
     print(planet)
 print()

python/read_database.py

@@ -12,8 +12,8 @@ db = client['sales']
 
 # Read the available collection names.
 print(">> Available collections:")
-for collectionName in db.list_collection_names():
-    print(collectionName)
+for collection_name in db.list_collection_names():
+    print(collection_name)
 
 if "Customers" not in db.list_collection_names():
     print("!! Error: the customers collection was not found.")

python/select_planet.py

@@ -12,23 +12,23 @@ db = client['planets']
 
 # Read the available collection names.
 print(">> Available collections:")
-for collectionName in db.list_collection_names():
-    print(collectionName)
+for collection_name in db.list_collection_names():
+    print(collection_name)
 print()
 
 if "OrbitData" not in db.list_collection_names():
     print("!! Error: the \"OrbitData\" collection was not found.")
     sys.exit(1)
 
-orbitData = db["OrbitData"]
+orbit_data = db["OrbitData"]
 
 # Print the names of the planets.
 print(">> The names of the planets:")
-for planet in orbitData.find({}, {'name': 1, '_id': 0}):
+for planet in orbit_data.find({}, {'name': 1, '_id': 0}):
     print(planet)
 print()
 
 # Print the data for Pluto
 print(">> The data for Pluto:")
-planet = orbitData.find_one({'name': 'Pluto'})
+planet = orbit_data.find_one({'name': 'Pluto'})
 pprint.pprint(planet)