Question

我是Python和Docker初学者，因此，我不确定错误所在。

Python 3.6.4 Docker版本18.03.0-ce，build 0520e24

这是python包在磁盘上的外观：

结构：

python-packaging-dependencies
    jsonops
        pyjo_demo.py
        pyjo_spec.py
        __init__.py
        __pycache__
    LICENSE.txt
    MANIFEST.in
    README.rst
    setup.cfg
    setup.py
    __init__.py

主要文件如下。 pyjo_spec.py

from pyjo import Model, Field, RangeField, EnumField
from enum import Enum

class Gender(Enum):
    female = 0
    male = 1

class Address(Model):
    city = Field(type=str)
    postal_code = Field(type=int)
    address = Field()

class User(Model):
    name = Field(type=str, repr=True, required=True)
    age = RangeField(min=18, max=120)
    #  equivalent to: Field(type=int, validator=lambda x: 18 <= x <= 120)
    gender = EnumField(enum=Gender)
    address = Field(type=Address)

pyjo_demo.py

from jsonops.pyjo_spec import Gender, Address, User

def to_dictionary():
    u = User(name='john', age=18, address=Address(city='NYC'))
    print(u.to_dict())
    # {
    #     "name": "john",
    #     "age": 18,
    #     "address": {
    #         "city": "NYC"
    #     }
    # }

def from_dictionary():
    u = User.from_dict({
        "name": "john",
        "gender": "male",
        "age": 18,
        "address": {
            "city": "NYC"
        }
    })

    print(u)
    # <User(name=john)>

    print(u.gender)
    # Gender.male

    print(u.address.city)
    # NYC

在我的本地Windows /远程Linux机器上，我调用了演示文件

Dockerfile

# Use an official Python runtime as a parent image
FROM python:3.6.4

# Set the working directory to /app
WORKDIR /app

# Copy the current directory contents into the container at /app
ADD . /app

# Install any needed packages specified in requirements.txt
RUN pip install python_packaging_dependencies-1.0-py3-none-any.whl -r requirements.txt

# Make port 80 available to the world outside this container
EXPOSE 80

# Define environment variable
ENV NAME World

# Run app.py when the container launches
CMD ["python", "app.py"]

app.py文件。这里 - 调用/ toDictionary工作正常（只返回一个静态字符串），前提是返回u.to_dict（）被注释

from flask import Flask
import os
import socket
import jsonops
import jsonops.pyjo_spec
from jsonops.pyjo_spec import Gender, Address, User

app = Flask(__name__)

@app.route("/fromDictionary")
def from_dictionary():
 u = User.from_dict({
        "name": "john",
        "gender": "male",
        "age": 18,
        "address": {
            "city": "NYC"
        }
    })

 print(u)
 #<User(name=john)>

 print(u.gender)
 #Gender.male

 print(u.address.city)
 #NYC

 #return u
 return u.gender

@app.route("/toDictionary")
def to_dictionary():
 u = User(name='john', age=18, address=Address(city='NYC'))

 print(u.to_dict())
 #return u.to_dict()
 return "toDictionary"

if __name__ == "__main__":
    app.run(host='0.0.0.0', port=80)

来自/来自词典的调用失败

ERROR in app: Exception on /fromDictionary [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1615, in full_dispatch_request
    return self.finalize_request(rv)
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1630, in finalize_request
    response = self.make_response(rv)
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1740, in make_response
    rv = self.response_class.force_type(rv, request.environ)
  File "/usr/local/lib/python3.6/site-packages/werkzeug/wrappers.py", line 921, in force_type
    response = BaseResponse(*_run_wsgi_app(response, environ))
  File "/usr/local/lib/python3.6/site-packages/werkzeug/wrappers.py", line 59, in _run_wsgi_app
    return _run_wsgi_app(*args)
  File "/usr/local/lib/python3.6/site-packages/werkzeug/test.py", line 923, in run_wsgi_app
    app_rv = app(environ, start_response)
TypeError: 'Gender' object is not callable
10.254.70.61 - - [26/Mar/2018 17:20:27] "GET /fromDictionary HTTP/1.1" 500 -

当我停止容器时，仍会打印这些东西

[26/Mar/2018 17:20:27] "GET /fromDictionary HTTP/1.1" 500 -
^C<User(name=john)>
Gender.male
NYC

我错过了什么？

Answer 1

我认为问题出在return u.gender方法中尝试@app.route("/fromDictionary")的地方。它不是一个字符串，所以烧瓶不知道如何处理它通过HTTP发送回来。您可以尝试将其编码为JSON数据或其他可以作为明文响应发送的格式。

对象在docker镜像中不可调用

1 个答案: