Adjust backend coding style

Add line spacing, section comments, and import consistency

1 files changed, 14 insertions, 9 deletions

diff --git a/backend/tol_data/gen_linked_imgs.py b/backend/tol_data/gen_linked_imgs.py
index 7002e92..c9d7aac 100755
--- a/backend/tol_data/gen_linked_imgs.py
+++ b/backend/tol_data/gen_linked_imgs.py
@@ -5,11 +5,12 @@ Look for nodes without images in the database, and tries to
 associate them with images from their children
 """
 
+import argparse
 import re
 import sqlite3
 
 DB_FILE = 'data.db'
-#
+
 COMPOUND_NAME_REGEX = re.compile(r'\[(.+) \+ (.+)]')
 UP_PROPAGATE_COMPOUND_IMGS = False
 
@@ -18,14 +19,14 @@ def genData(dbFile: str) -> None:
 	dbCon = sqlite3.connect(dbFile)
 	dbCur = dbCon.cursor()
 	dbCur.execute('CREATE TABLE linked_imgs (name TEXT PRIMARY KEY, otol_ids TEXT)')
-	#
+
 	print('Getting nodes with images')
 	nodeToUsedId: dict[str, str] = {} # Maps name of node to otol ID of node to use image for
 	query = 'SELECT nodes.name, nodes.id FROM nodes INNER JOIN node_imgs ON nodes.name = node_imgs.name'
 	for name, otolId in dbCur.execute(query):
 		nodeToUsedId[name] = otolId
 	print(f'Found {len(nodeToUsedId)}')
-	#
+
 	print('Getting node depths')
 	nodeToDepth: dict[str, int] = {}
 	maxDepth = 0
@@ -33,6 +34,7 @@ def genData(dbFile: str) -> None:
 	for nodeName in nodeToUsedId.keys():
 		nodeChain = [nodeName]
 		lastDepth = 0
+
 		# Add ancestors
 		while True:
 			row = dbCur.execute('SELECT parent FROM edges WHERE child = ?', (nodeName,)).fetchone()
@@ -45,11 +47,12 @@ def genData(dbFile: str) -> None:
 			if nodeName in nodeToDepth:
 				lastDepth = nodeToDepth[nodeName]
 				break
+
 		# Add depths
 		for i in range(len(nodeChain)):
 			nodeToDepth[nodeChain[-i-1]] = i + lastDepth
 		maxDepth = max(maxDepth, lastDepth + len(nodeChain) - 1)
-	#
+
 	print('Finding ancestors to give linked images')
 	depthToNodes: dict[int, list[str]] = {depth: [] for depth in range(maxDepth + 1)}
 	for nodeName, depth in nodeToDepth.items():
@@ -70,12 +73,12 @@ def genData(dbFile: str) -> None:
 				(tips,) = dbCur.execute('SELECT tips FROM nodes WHERE name == ?', (node,)).fetchone()
 				if parent not in parentToCandidate or parentToCandidate[parent][1] < tips:
 					parentToCandidate[parent] = (node, tips)
-	#
+
 	print('Replacing linked-images for compound nodes')
 	for iterNum, node in enumerate(parentToCandidate.keys(), 1):
 		if iterNum % 1e4 == 0:
 			print(f'At iteration {iterNum}')
-		#
+
 		match = COMPOUND_NAME_REGEX.fullmatch(node)
 		if match is not None:
 			# Replace associated image with subname images
@@ -85,12 +88,15 @@ def genData(dbFile: str) -> None:
 				otolIdPair[0] = nodeToUsedId[subName1]
 			if subName2 in nodeToUsedId:
 				otolIdPair[1] = nodeToUsedId[subName2]
+
 			# Use no image if both subimages not found
 			if otolIdPair[0] == '' and otolIdPair[1] == '':
 				dbCur.execute('DELETE FROM linked_imgs WHERE name = ?', (node,))
 				continue
+
 			# Add to db
 			dbCur.execute('UPDATE linked_imgs SET otol_ids = ? WHERE name = ?', (','.join(otolIdPair), node))
+
 			# Possibly repeat operation upon parent/ancestors
 			if UP_PROPAGATE_COMPOUND_IMGS:
 				while True:
@@ -104,14 +110,13 @@ def genData(dbFile: str) -> None:
 							node = parent
 							continue
 					break
-	#
+
 	print('Closing database')
 	dbCon.commit()
 	dbCon.close()
 
 if __name__ == '__main__':
-	import argparse
 	parser = argparse.ArgumentParser(description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
 	parser.parse_args()
-	#
+
 	genData(DB_FILE)