小编adr*_*der的帖子

我正在尝试从此处运行代码来下载所有 S&P 500 股票：

https://pythonprogramming.net/sp500-company-price-data-python-programming-for-finance/

import bs4 as bs
import datetime as dt
import os
import pandas_datareader.data as web
import pickle
import requests


def save_sp500_tickers():
    resp = requests.get('http://en.wikipedia.org/wiki/List_of_S%26P_500_companies')
    soup = bs.BeautifulSoup(resp.text, 'lxml')
    table = soup.find('table', {'class': 'wikitable sortable'})
    tickers = []
    for row in table.findAll('tr')[1:]:
        ticker = row.findAll('td')[0].text
        tickers.append(ticker)
    with open("sp500tickers.pickle", "wb") as f:
        pickle.dump(tickers, f)
    return tickers


# save_sp500_tickers()
def get_data_from_yahoo(reload_sp500=False):
    if reload_sp500:
        tickers = save_sp500_tickers()
    else:
        with open("sp500tickers.pickle", "rb") as f:
            tickers = pickle.load(f)
    if not os.path.exists('stock_dfs'):
        os.makedirs('stock_dfs') …

我试图在文件夹中的所有文本文件上执行python脚本:

for fi in sys.argv[1:]:

我收到以下错误

-bash: /usr/bin/python: Argument list too long

我称之为Python函数的方式如下:

python functionName.py *.txt

该文件夹有大约9000个文件.有没有办法运行此功能,而不必将我的数据拆分到更多的文件夹等？拆分文件不太实用,因为我将来必须在更多文件中执行该功能...谢谢

编辑:根据选定的正确回复和回复者(Charles Duffy)的评论,对我有用的是:

printf '%s\0' *.txt | xargs -0 python ./functionName.py

因为我没有有效的shebang ..

我有一个 Python 数据框，如下所示：

    year_2021   year_2020   year_2019   year_2018   year_2017   year_2016   year_2015
A   15.930541127542696  0.12659425148389353 37.859222886444584  0.7502044402344105  29.867551207184103  -2.62377211249297   -0.20709969350376067
AA  67.78493901734711   0.8676822974374843  7.609706605792995   -0.4184107467700045 -18.02591304685353  -1.2791578388405083 -51.821640736128046
AAL 61.46728433834196   -4.05834067688741   -45.78892961483622  1.4295670957092637  -11.699505205100467 1.1522856582117076  -39.40366183570082

我试图获得每年最大的 n：

dataframe = yearly_returns.nlargest(5, "year_"+str(2021))

这给了我错误TypeError: Column 'year_2021' has dtype object, cannot use method 'nlargest' with this dtype

我该如何解决这个问题？

I am trying to run the following code:

import cv2
import pytesseract

img = cv2.imread('/Users/user1/Desktop/folder1/pdf1.pdf')
text = pytesseract.image_to_string(img)
print(text)

which gives me the following error:

Traceback (most recent call last):
  File "/Users/user1/PycharmProjects/project1/python_file.py", line 5, in <module>
    text = pytesseract.image_to_string(img)
  File "/Users/user1/PycharmProjects/project1/venv/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 346, in image_to_string
    return {
  File "/Users/user1/PycharmProjects/project1/venv/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 349, in <lambda>
    Output.STRING: lambda: run_and_get_output(*args),
  File "/Users/user1/PycharmProjects/project1/venv/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 249, in run_and_get_output
    with save(image) as (temp_name, input_filename):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/contextlib.py", line 113, in __enter__
    return next(self.gen)
  File "/Users/user1/PycharmProjects/project1/venv/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 172, in …