Question

我正在尝试从显示加密货币值的网站解析json数据。我试图使用python解析它。我对如何显示输出感到有点迷失。

API：https://min-api.cryptocompare.com/data/price?fsym=XMR&tsyms=USD

# code starts below

import requests

# Set the request parameters
url = 'https://min-api.cryptocompare.com/data/price?fsym=XMR&tsyms=USD'

# Fetch url
print("Fetching url..")

# Do the HTTP get request
response = requests.get(url, verify=True) #Verify is check SSL certificate

# Error handling

# Check for HTTP codes other than 200
if response.status_code != 200:
    print('Status:', response.status_code, 'Problem with the request. Exiting.')
exit()

# Decode the JSON response into a dictionary and use the data

USD = response.json()

output = USD[0]['USD']

print('Output USD:'), USD

# code ends

我收到响应代码200，因为IDLE试图退出。该代码基于另一个项目，我不相信我正确解析json？

Answer 1

问题在于：

newprice = row.replace("(","")

你缩进的方式，Python将始终调用exit（）。你希望它只在实际出现错误时调用exit（），如下所示：

if response.status_code != 200:
    print('Status:', response.status_code, 'Problem with the request. Exiting.')
exit()

但是，您还有另一个问题。你试图用美元分配“输出”对象的值;美元不存在：

if response.status_code != 200:
    print('Status:', response.status_code, 'Problem with the request. Exiting.')
    exit()

相反，试试这个：

data = response.json()

output = USD[0]['USD'] #"USD" doesn't exist. It's the value you're trying to find, not the json that contains the object itself.

print('Output USD:'), USD #"USD" doesn't exist. I think you meant to print "output" here, which is the value you're setting in the line above.

Answer 2

您的exit()行没有正确缩进。试试这个：

if response.status_code != 200:
    print('Status:', response.status_code, 'Problem with the request. Exiting.')
    exit()

此外，即使您正确解析JSON，也会错误地使用结果数据。试试这个：

output = USD['USD']         # Note: "[0]" not required
print('Output USD:', USD)   # Note: ", USD" inside the parentheses

python- https / json解析器错误问题

2 个答案: