python debugging examples

Author: marcel-dempers

.vscode/launch.json

@@ -32,6 +32,20 @@
             "args": [],
             "trace" : "verbose",
             "env" : {}
-        }
+        },
+        {
+            "name": "Python Attach",
+            "type": "python",
+            "request": "attach",
+            "pathMappings": [
+                {
+                    "localRoot": "${workspaceFolder}/python/src/",
+                    "remoteRoot": "/work"
+                }
+            ],
+            "port": 5678,
+            "host": "127.0.0.1"
+        },
+        
     ]
 }

docker-compose.yaml

@@ -44,7 +44,7 @@ services:
     image: aimvector/python:1.0.0
     build:
       context: ./python
-      target: prod
+      target: debug
     #working_dir: /work      #comment out for build.target:prod
     #entrypoint: /bin/sh     #comment out for build.target:prod
     #stdin_open: true        #comment out for build.target:prod
@@ -53,3 +53,4 @@ services:
     - ./python/src/:/work
     ports:
       - 5003:5000
+      - 5678:5678

python/dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.7.3-alpine3.9 as dev
+FROM python:3.7.3-alpine3.9 as base
 
 RUN mkdir /work/
 WORKDIR /work/
@@ -7,15 +7,16 @@ COPY ./src/requirements.txt /work/requirements.txt
 RUN pip install -r requirements.txt
 
 COPY ./src/ /work/
+ENV FLASK_APP=server.py
 
-###########START NEW IMAGE###################
+###########START NEW IMAGE : DEBUGGER ###################
+FROM base as debug
+RUN pip install ptvsd
 
-FROM python:3.7.3-alpine3.9 as prod
+WORKDIR /work/
+CMD python -m ptvsd --host 0.0.0.0 --port 5678 --wait --multiprocess -m flask run -h 0.0.0 -p 5000
 
-RUN mkdir /app/
-WORKDIR /app/
+###########START NEW IMAGE: PRODUCTION ###################
+FROM base as prod
 
-COPY --from=dev /work/ /app/
-RUN pip install -r requirements.txt
-ENV FLASK_APP=server.py
 CMD flask run -h 0.0.0 -p 5000