加載問題。csv 文件的完整路徑為 Pandas

Question

伙計們。

我正在嘗試創建一個用戶輸入文件路徑的輸入，並將此輸入加載到 pd.read_csv。 例子：

import os
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt

file_name = input("insert file name (and path): ")

dados = pd.read_csv(nome_arquivo, encoding = "UTF-8", header = 0, decimal=",", sep='\t')

我收到以下錯誤消息：

raceback (most recent call last):
  File "/Users/lsales/PycharmProjects/Propmec/Ensaio_tracao.py", line 42, in <module>
    dados = pd.read_csv(nome_arquivo, encoding = "UTF-8", header = 0, decimal=",", sep='\t')
  File "/Users/lsales/PycharmProjects/Propmec/venv/lib/python3.7/site-packages/pandas/io/parsers.py", line 676, in parser_f
    return _read(filepath_or_buffer, kwds)
  File "/Users/lsales/PycharmProjects/Propmec/venv/lib/python3.7/site-packages/pandas/io/parsers.py", line 448, in _read
    parser = TextFileReader(fp_or_buf, **kwds)
  File "/Users/lsales/PycharmProjects/Propmec/venv/lib/python3.7/site-packages/pandas/io/parsers.py", line 880, in __init__
    self._make_engine(self.engine)
  File "/Users/lsales/PycharmProjects/Propmec/venv/lib/python3.7/site-packages/pandas/io/parsers.py", line 1114, in _make_engine
    self._engine = CParserWrapper(self.f, **self.options)
  File "/Users/lsales/PycharmProjects/Propmec/venv/lib/python3.7/site-packages/pandas/io/parsers.py", line 1874, in __init__
    src = open(src, "rb")
FileNotFoundError: [Errno 2] No such file or directory: '/:Users/:lsales/:Downloads/:DS01.txt'

我已經嘗試了所有變體，如 \\、: 等。

有人可以在這件事上給我幫助嗎？

謝謝！

Answer 1

正如 Quang 指出的那樣，您沒有正確解析 Mac OS 路徑，但是如果文件不真正存在或者您將來出錯怎么辦？ 因為這個小問題讓你的整個程序崩潰是不好的。

處理錯誤或編寫可以防止錯誤的代碼是一種很好的做法，讓我們嘗試一個While循環並使用pathlib測試文件是否存在。

from Pathlib import Path 

while True:
    path = input("insert file name (and path): ")

    if Path(path).is_file():
        break
    print(f'{path} is not a valid file_path, please try again.')
    print(f"A valid example of your systems file path is: {Path.cwd()}")

測試。

insert file name (and path): test.csv
test.csv is not a valid file_path, please try again.
A valid example of your systems file path is: C:\Users\datanovice