Meta: add venv and memory-profiler

.gitignore

@@ -61,3 +61,6 @@ node_modules
 dev.sh
 start.sh
 restart.sh
+
+# venv
+.venv

profile.sh

+mprof run ./backend.py \
+  --account-file ./.htaccounts \
+  --cookie-dir ./.htcookies \
+  --port 8080 \
+  --host 0.0.0.0 \
+  --mongo-host 127.0.0.1 \
+  --mongo-port 27017 \
+  --mongo-db tester \
+  --mongo-username $MONGO_USERNAME \
+  --mongo-password $MONGO_PASSWORD \
+  --twitter-auth-key AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA \
+  --guest-sessions $GUEST_SESSIONS

requirements.txt

-aiohttp
-pymongo
-bs4
-daemon
+aiohttp==3.7.3
+async-timeout==3.0.1
+attrs==20.3.0
+beautifulsoup4==4.9.3
+bs4==0.0.1
+chardet==3.0.4
+cycler==0.10.0
+daemon==1.2
+idna==2.10
+kiwisolver==1.3.1
+matplotlib==3.3.3
+memory-profiler==0.58.0
+multidict==5.1.0
+numpy==1.19.4
+Pillow==8.0.1
+psutil==5.7.3
+pymongo==3.11.2
+pyparsing==2.4.7
+python-dateutil==2.8.1
+six==1.15.0
+soupsieve==2.1
+typing-extensions==3.7.4.3
+yarl==1.6.3