Python3.7解决报错：'NoneType' object has no attribute 'decode'的办法

最新推荐文章于 2024-12-27 20:10:58 发布

江左扶苏

最新推荐文章于 2024-12-27 20:10:58 发布

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分类专栏：排错文章标签： Python 报错

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本文解决了一个在Python编程中常见的错误——在使用GitHub API时出现的AttributeError异常，通过将repo_dict['description']转换为字符串类型，成功避免了NoneType对象的decode属性调用错误。

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本人在练习《Python编程从入门到实践》中的使用API项目时，在获取API的过程中出现了报错

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

# Make an API call, and store the response.
url = 'https://api.github.com/search/repositories?q=language:python&sort=stars'
r = requests.get(url)
print("Status code:", r.status_code)

# Store API response in a variable.
response_dict = r.json()
print("Total repositories:", response_dict['total_count'])

# Explore information about the repositories.
repo_dicts = response_dict['items']

names, plot_dicts = [], []
for repo_dict in repo_dicts:
    names.append(repo_dict['name'])

    plot_dict = {
        'value': repo_dict['stargazers_count'],
        'label': repo_dict['description'],
        'xlink': repo_dict['html_url'],
    }
    plot_dicts.append(plot_dict)

# Make visualization.
my_style = LS('#333366', base_style=LCS)

my_config = pygal.Config()
my_config.x_label_rotation = 45
my_config.show_legend = False
my_config.title_font_size = 24
my_config.label_font_size = 14
my_config.major_label_font_size = 18
my_config.truncate_label = 15
my_config.show_y_guides = False
my_config.width = 1000

chart = pygal.Bar(my_config, style=my_style)
chart.title = 'Most-Starred Python Projects on GitHub'
chart.x_labels = names

chart.add('', plot_dicts)
chart.render_to_file('python_repos.svg')

运行这个项目时显示报错：AttributeError: 'NoneType' object has no attribute 'decode'

这个报错信息提示有一个变量的值是None，None 的类型是NoneType , 它没有decode 方法。

解决方法：把repo_dict['description']转为str形式就好了

plot_dict = {
    'value': repo_dict['stargazers_count'],
    'label': str(repo_dict['description']),
    'xlink': repo_dict['html_url'],
}
plot_dicts.append(plot_dict)