尝试获取代码时出现 ParseError

Question

我正在努力让我的程序达到运行。我使用的所有软件包都是最新的。

我希望程序打印我选择的股票代码。

但是，我遇到了很多错误，我似乎无法理解我遇到的错误。

我曾尝试将 mktcap_min 和 mktcap_max 更改为更小的值，但无济于事。

我也不确定我的文件和文件夹路径的语法是否正确。

我也查找了人们遇到的类似错误，但我无法将我看到的解决方案实施到我自己的代码中。

我运行命令提示符下的程序得到的错误信息如下：

Traceback (most recent call last):
  File "C:\Users\Anthony\Desktop\Classes\testPrograms\poker.py", line 51, in <module>
    tickers = gt.get_tickers_filtered(mktcap_min = 150000, mktcap_max = 10000000, sectors = None)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\get_all_tickers\get_tickers.py", line 84, in get_tickers_filtered
    tickers_list.extend(__exchange2list_filtered(exchange, mktcap_min=mktcap_min, mktcap_max=mktcap_max, sectors=sectors))
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\get_all_tickers\get_tickers.py", line 145, in __exchange2list_filtered
    df = __exchange2df(exchange)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\get_all_tickers\get_tickers.py", line 134, in __exchange2df
    df = pd.read_csv(data, sep=",")
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\util\_decorators.py", line 311, in wrapper
    return func(*args, **kwargs)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\io\parsers\readers.py", line 586, in read_csv
    return _read(filepath_or_buffer, kwds)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\io\parsers\readers.py", line 488, in _read
    return parser.read(nrows)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\io\parsers\readers.py", line 1047, in read
    index, columns, col_dict = self._engine.read(nrows)
  File "C:\Users\Anthony\AppData\Local\Programs\Python\Python39\lib\site-packages\pandas\io\parsers\c_parser_wrapper.py", line 223, in read
    chunks = self._reader.read_low_memory(nrows)
  File "pandas\_libs\parsers.pyx", line 801, in pandas._libs.parsers.TextReader.read_low_memory
  File "pandas\_libs\parsers.pyx", line 857, in pandas._libs.parsers.TextReader._read_rows
  File "pandas\_libs\parsers.pyx", line 843, in pandas._libs.parsers.TextReader._tokenize_rows
  File "pandas\_libs\parsers.pyx", line 1925, in pandas._libs.parsers.raise_parser_error
pandas.errors.ParserError: Error tokenizing data. C error: Expected 1 fields in line 5, saw 47

根据我最基本的理解，我可能有记忆问题吗？我怎样才能补救这种情况并让我的程序运行没有这些错误？

这是程序的所有代码：


import yfinance as yf, pandas as pd, shutil, os
from get_all_tickers import get_tickers as gt

tickers = gt.get_tickers_filtered(mktcap_min = 150000, mktcap_max = 10000000, sectors = None)
print("the amount of stocks chosen to observe: " + str(len(tickers)))

shutil.rmtree(r"C:\Users\Anthony\Desktop\Classes\testPrograms\pokerStorage")
os.mkdir(r"C:\Users\Anthony\Desktop\Classes\testPrograms\pokerStorage")

Stock_Failure = 0
Stocks_Not_Imported = 0

i=0
while (i < len(tickers)) and (Amount_of_API_Calls < 1800):
    try:
        stock = tickers[i]
        temp = yf.Ticker(str(stock))
        Hist_data = temp.history(period="max")
        Hist_data.to_csv(r"C:\Users\Anthony\Desktop\Classes\testPrograms\pokerStorage\historicalData.csv")
        time.sleep(2)
        Amount_of_API_Calls += 1
        Stock_Failure = 0
        i += 1

    except ValueError:
        print("Yahoo Finance Back-end Error, Attempting to Fix")

        if Stock_Failure > 5:
            i+=1
            Stocks_Not_Imported += 1
            Amount_of_API_Calls += 1
            Stock_Failure += 1
            
print("The amount of stocks successfully imported: " + str(i - Stocks_Not_Imported))

Answer 1

Nasdaq API 已更新，此软件包基于此。见 open issue on github.

解决方案（由github user Possums提供）

import requests
import pandas as pd

headers = {
    'authority': 'api.nasdaq.com',
    'accept': 'application/json, text/plain, */*',
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36',
    'origin': 'https://www.nasdaq.com',
    'sec-fetch-site': 'same-site',
    'sec-fetch-mode': 'cors',
    'sec-fetch-dest': 'empty',
    'referer': 'https://www.nasdaq.com/',
    'accept-language': 'en-US,en;q=0.9',
}

params = (
    ('tableonly', 'true'),
    ('limit', '25'),
    ('offset', '0'),
    ('download', 'true'),
)

r = requests.get('https://api.nasdaq.com/api/screener/stocks', headers=headers, params=params)
data = r.json()['data']
df = pd.DataFrame(data['rows'], columns=data['headers'])

尝试获取代码时出现 ParseError

ParseError while trying to grab tickers

python

shutil

pandas

python-os

yfinance