Question: Hello StackOverflow community. I am trying to deploy Firebase functions written in Python from a React-Native project. My code snippet looks like this: from firebase_functions import firestore_fn, https_fn import fitz import re import requests import io from datetime import datetime # The Firebase Admin SDK to access Cloud Firestore. from firebase_admin import initialize_app, firestore, credentials, storage import google.cloud.firestore from google.cloud import storage as Storage from google.oauth2 import service_account from uuid import uuid4 cred = credentials.Certificate("link_to_my_certificate.json") app = initialize_app(cred,{'storageBucket':'my_project_name.appspot.com'}) @https_fn.on_request() def printHello(req: https_fn.Request) -> https_fn.Response: https_fn.Response("Hello from Firebase functions", status=200)  I tested them: tsc --watch firebase emulators:start --only functions It works perfectly fine, and after that, I'm trying to deploy them and I get the output like this: knswrw@MacBook functions % firebase deploy --only functions === Deploying to 'my_project_name'... i deploying functions i functions: preparing codebase default for deployment i functions: ensuring required API cloudfunctions.googleapis.com is enabled... i functions: ensuring required API cloudbuild.googleapis.com is enabled... i artifactregistry: ensuring required API artifactregistry.googleapis.com is enabled... ✔ artifactregistry: required API artifactregistry.googleapis.com is enabled ✔ functions: required API cloudbuild.googleapis.com is enabled ✔ functions: required API cloudfunctions.googleapis.com is enabled i functions: Loading and analyzing source code for codebase default to determine what to deploy * Serving Flask app 'serving' * Debug mode: off WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Running on http://127.0.0.1:8082 Press CTRL+C to quit 127.0.0.1 - - [14/Sep/2023 12:34:11] "GET /__/functions.yaml HTTP/1.1" 200 - 127.0.0.1 - - [14/Sep/2023 12:34:11] "GET /__/quitquitquit HTTP/1.1" 200 - /bin/sh: line 1: 75256 Terminated: 15 python3.11 "/Users/knswrw/Desktop/Project/firebase/functions/venv/lib/python3.11/site-packages/firebase_functions/private/serving.py" i functions: preparing functions directory for uploading... i functions: packaged /Users/knswrw/Desktop/Project/firebase/functions (14.13 KB) for uploading i functions: ensuring required API run.googleapis.com is enabled... i functions: ensuring required API eventarc.googleapis.com is enabled... i functions: ensuring required API pubsub.googleapis.com is enabled... i functions: ensuring required API storage.googleapis.com is enabled... ✔ functions: required API pubsub.googleapis.com is enabled ✔ functions: required API run.googleapis.com is enabled ✔ functions: required API eventarc.googleapis.com is enabled ✔ functions: required API storage.googleapis.com is enabled i functions: generating the service identity for pubsub.googleapis.com... i functions: generating the service identity for eventarc.googleapis.com... ✔ functions: functions folder uploaded successfully i functions: creating Python 3.11 (2nd Gen) function printHello(us-central1)... Could not create or update Cloud Run service printhello, Container Healthcheck failed. Revision 'printhello-00001-wev' is not ready and cannot serve traffic. The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable. Logs for this revision might contain more information. Logs URL: https://console.cloud.google.com/logs/viewer?project=my_project_name&resource=cloud_run_revision/service_name/printhello/revision_name/printhello-00001-wev&advancedFilter=resource.type%3D%22cloud_run_revision%22%0Aresource.labels.service_name%3D%22printhello%22%0Aresource.labels.revision_name%3D%22printhello-00001-wev%22 For more troubleshooting guidance, see https://cloud.google.com/run/docs/troubleshooting#container-failed-to-start Functions deploy had errors with the following functions: printHello(us-central1) i functions: cleaning up build files... Error: There was an error deploying functions  I tried to search about this topic on the internet, but I didn't find an answer to my question. I would welcome any answer, any explanation and any advice. Thank you. EDITED: There's a trouble in the fitz library from Pymupdf (I'm using it in the import above). The question is next, now modified: How to import a library in Python for Firebase functions? How to install it in the right way? And how to deploy the functions?

Answer: I found the solution to my problem when I checked the firebase-debug.log. It appears that there was an issue with the "fitz" library from Pymupdf, which I had imported in my code.  There's a trouble in fitz library from Pymupdf (I'm using it in the import above)  I had initially added the library to my Python Firebase functions using the following command: pip3 install -t _directoryName _moduleName  However, it turns out that this was not the correct approach. I encountered deployment issues and received an error message like this:  For more troubleshooting guidance, see https://cloud.google.com/run/docs/troubleshooting#container-failed-to-start Could not create or update Cloud Run service FunctionName, Container Healthcheck failed. Revision 'FunctionName-00001-wus' is not ready and cannot serve traffic. The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable. Logs for this revision might contain more information.  Upon examining the logs, I noticed that the issue was related to the "import fitz" statement in my code.  Import fitz  To resolve this, I followed these steps: Delete the "venv" directory. Add the libraries you want to use to the "requirements.txt" file. Recreate the virtual environment with Python 3.11 using the following commands: python3.11 -m venv venv source venv/bin/activate pip3 install --upgrade pip python3.11 -m pip install -r requirements.txt  Write your Firebase functions. Finally, follow these steps for deployment: tsc —watch firebase emulators:start --only functions firebase deploy  And that's it! Your deployment should now work smoothly.