also path to pip

Author: masci

appveyor.yml

@@ -9,8 +9,8 @@ skip_branch_with_pr: true
 
 environment:
   GOPATH: c:\gopath
-  # override default Python 2.7
-  PATH: c:\protoc\bin;$(GOPATH)\bin;C:\Python37;$(PATH)
+  # add protoc, gopath and override default Python 2.7
+  PATH: c:\protoc\bin;$(GOPATH)\bin;C:\Python37;C:\Python37\Scripts;$(PATH)
 
 stack: go 1.12
 
@@ -22,6 +22,7 @@ install:
   - go get github.com/golangci/govet
   - go get golang.org/x/lint/golint
   # Python dependencies needed at test time
+  - python -V
   - pip install -r test\requirements.txt
   # protobuf tooling needed at test time
   - go get github.com/golang/protobuf/protoc-gen-go