[Python] Python generated client has a missing body for if statement

Hi.

I use your application for generating swagger clients for my Python project. Sadly versions 3.0.15 and 3.0.16 does not generate correct class. I put dockerfile and json below to help you recreate the problem.
If you run it there will be generated 2 clients. One of the valid (generated by 3.0.14) and one invalid (generated by 3.0.16).
In swagger_client.api.api_keys_api there is class ApiKeysApi. In line 105 there is if if 'secret' in params: and in the newest version this if does not has body. Version 3.0.14 produce this body and it looks like that form_params.append(('Secret', params['secret'])) # noqa: E501

Please confirm the problem.

Best regards
Damian

Dockerfile

FROM adoptopenjdk/openjdk11:x86_64-debianslim-jre-11.0.6_10

WORKDIR /swagger_env

RUN apt-get update && apt-get -y install wget

RUN wget https://repo1.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.16/swagger-codegen-cli-3.0.16.jar -O\
	/usr/local/bin/swagger-codegen-cli-invalid.jar

RUN wget https://repo1.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.14/swagger-codegen-cli-3.0.14.jar -O\
	/usr/local/bin/swagger-codegen-cli.jar

ENTRYPOINT java -jar /usr/local/bin/swagger-codegen-cli-invalid.jar generate \
	-i swagger.json \
	-l python \
	-o invalid_swagger_client \
	&& \
    java -jar /usr/local/bin/swagger-codegen-cli.jar generate \
	-i swagger.json \
	-l python \
	-o valid_swagger_client

JSON file

{
  "openapi": "3.0.1",
  "info": {
    "title": "Users Service",
    "version": "2.0"
  },
  "servers": [
    {
      "url": "/api/users"
    }
  ],
  "paths": {
    "/v2/namespace/{namespace}/api-keys/validate": {
      "post": {
        "tags": [
          "ApiKeys"
        ],
        "summary": "Validate Api-Key",
        "parameters": [
          {
            "name": "namespace",
            "in": "path",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "requestBody": {
          "content": {
            "multipart/form-data": {
              "schema": {
                "required": [
                  "Secret"
                ],
                "type": "object",
                "properties": {
                  "Secret": {
                    "type": "string"
                  }
                }
              },
              "encoding": {
                "Secret": {
                  "style": "form"
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Success",
            "content": {
              "text/plain": {
                "schema": {
                  "$ref": "#/components/schemas/ValidateApiKeyResult"
                }
              },
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ValidateApiKeyResult"
                }
              },
              "text/json": {
                "schema": {
                  "$ref": "#/components/schemas/ValidateApiKeyResult"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "ValidateApiKeyResult": {
        "type": "object",
        "properties": {
          "success": {
            "type": "boolean",
            "readOnly": true
          },
          "message": {
            "type": "string",
            "nullable": true,
            "readOnly": true
          },
          "code": {
            "allOf": [
              {
                "$ref": "#/components/schemas/HttpStatusCode"
              }
            ]
          },
          "status": {
            "type": "integer",
            "format": "int32",
            "readOnly": true
          },
          "owner": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      }
    }
  }
}

bat for help

docker build -t swagger_env . && docker run --network="host" --rm -it -v %cd%:/swagger_env swagger_env

Run the supplied Dockerfile with the provided swagger.json to generate the 3.0.16 and 3.0.14 clients. Compare swagger_client.api.api_keys_api around the if 'secret' in params: statement; done means the newer Python client includes the multipart Secret form parameter body as the older client does.