Question

很困惑我为什么会收到类型错误。

我试图让这段代码每隔x个时间运行一次，但是第二次运行它时会遇到错误。错误是：

"Traceback (most recent call last):
  File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.5/threading.py", line 1180, in run
    self.function(*self.args, **self.kwargs)
TypeError: parseXML() missing 1 required positional argument: 'xmlFile'"

我认为这与我如何设置parseXML有关！超级困惑。

from lxml import etree
import urllib.request
import csv
import threading

#Pickle is not needed
#append to list next

def handleLeg(leg):
   # print this leg as text, or save it to file maybe...
   text = etree.tostring(leg, pretty_print=True)
   # also process individual elements of interest here if we want
   tagsOfInterest=["noTrafficTravelTimeInSeconds", "lengthInMeters", "departureTime", "trafficDelayInSeconds"]  # whatever
   #list to use for data analysis
   global data
   data = []
   #create header dictionary that includes the data to be appended within it. IE, Header = {TrafficDelay[data(0)]...etc
   for child in leg:
       if 'summary' in child.tag:
          for elem in child:
              for item in tagsOfInterest:
                  if item in elem.tag:
                      data.append(elem.text)


def parseXML(xmlFile):
   #Parse the xml
   threading.Timer(5.0, parseXML).start()
   with urllib.request.urlopen("https://api.tomtom.com/routing/1/calculateRoute/-37.79205923474775,145.03010268799338:-37.798883995180496,145.03040309540322:-37.807106781970354,145.02895470253526:-37.80320743019992,145.01021142594075:-37.7999012967757,144.99318476311566:?routeType=shortest&key=xxx&computeTravelTimeFor=all") as fobj:
       xml = fobj.read()

   root = etree.fromstring(xml)

   for child in root:
       if 'route' in child.tag:
           handleLeg(child)
           # Write CSV file
           with open('datafile.csv', 'w') as fp:
            writer = csv.writer(fp, delimiter=' ')
            # writer.writerow(["your", "header", "foo"])  # write header
            writer.writerows(data)
           """for elem in child:
               if 'leg' in elem.tag:
                   handleLeg(elem)
"""


if __name__ == "__main__":
   parseXML("xmlFile")

with open('datafile.csv', 'r') as fp:
    reader = csv.reader(fp, quotechar='"')
    # next(reader, None)  # skip the headers
    data_read = [row for row in reader]

print(data_read)

Answer 1

当您设置parseXML时，您告诉它在没有任何参数的情况下调用threading.Timer(5.0, parseXML, ["xmlFile"]).start()。它应该看起来像这样：

import React from 'react';
import Q1Name from './questions/Q1Name';
import Q2Birthday from './questions/Q2Birthday';
import Q3City from './questions/Q3City';
import Q4YouReady from './questions/Q4YouReady';
import Q5Setting from './questions/Q5Setting';
import Q6Length from './questions/Q6Length';
import Q7Email from './questions/Q7Email';

        class SignUpPage extends React.Component {
    constructor(props) {
        super(props);

        this.state = {
            i: 0
        }
    }

    _handleClick() {
        const components = [Q1Name, Q2Birthday, Q3City, Q4YouReady, Q5Setting, Q6Length, Q7Email];

        if(this.state.i < components.length) this.setState({ i : this.state.i + 1});
    }

    //  handleIncrement() {
    //         this.setState({ count: this.state.count + 1});
    //     }}

    render() {
        const components = [Q1Name, Q2Birthday, Q3City, Q4YouReady, Q5Setting, Q6Length, Q7Email];
        const componentsToRender = components.map((Component, i) => (
            <Component key={i} />
        ));


        return (
            <div className = "container-fluid signup-page">
                <div className = "question-box">
                    {componentsToRender[this.state.i]}
                    <button type="submit" className="btn btn-custom btn-lg" onClick={() => this._handleClick}>Next Question!</button>
                </div>
            </div>
        );
    }
}

export default SignUpPage;

尝试使用线程时键入错误

1 个答案: