Question

    var receive = offer.itemsToReceive;
    var pass = true;
    receive.forEach(function(id) {
      var args = id.split(",");
      market.getItemPrice("some app id", some item name).then(function(result) {
        var json = JSON.parse(JSON.stringify(result)); // returns e.G $0.08
        var price = parseFloat(json.median_price.substring(1));

        if(price*100 < 100) {
           pass = false;
        }
      });
    });

运行此代码时，出现AttributeError。我正在尝试使用pygal模块将星形最多的python项目绘制到条形图上。该任务来自Eric Matthes的Python速成班。我正在和他交叉检查我的代码，但似乎找不到任何问题

跟踪：

import requests
import pygal
from pygal.style import LightColorizedStyle as LCS, LightenStyle as LS


url = "https://api.github.com/search/repositories? 
q=language:python&sort=stars"
r = requests.get(url)

response_dict = r.json()

names,stars = [],[]
for repo in repo_dicts:
    names.append(repo["name"])
    stars.append(repo["stargazers_count"])

my_style = LS("333366", base_style=LCS)
chart = pygal.Bar(style=my_style, x_label_rotation=45, show_legend=False)
chart.title = "Most starred Python projects on GitHub"
chart.x_labels = names

chart.add(" ", stars)
chart.render_to_file("repo_visual.svg")

非常感谢您的帮助。

Answer 1

@SagarJhamb您的代码有两个错误
1.repo_dicts未初始化
2。定义my_style = LS（“ 333366”，base_style = LCS）值应以＃333366 开头，以了解有关pygal的自定义样式的更多信息，您可以查看[pygal文档] [1] [1]： http://www.pygal.org/en/stable/documentation/parametric_styles.html

<?xml version="1.0" encoding="utf-8"?>
<!-- Root layout can be anything. Just make sure to include xmlns:app line. -->
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <!-- The RichContentEditText -->
    <!-- Notice app:allowedMimeTypes="images"; it is what accepts certain mime types
             (you can do this programmatically too) -->
    <com.gsconrad.richcontentedittext.RichContentEditText
        android:id="@+id/rich_content_edit_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/rich_content_edit_text_hint"
        android:inputType="text"
        app:allowedMimeTypes="images" />
</android.support.constraint.ConstraintLayout>

AttributeError：'NoneType'对象没有属性'startswith'

1 个答案: