Open csv using Python using relative filepath

Question

os.chdir(r"C:\Downloads")

I'm getting stuck with reading in files in Python. Why does specifying the relative file path not work when reading the file?

files = os.listdir(r"csvfilestoimport")

files
['file1.csv', 'file2.csv']

df1 = pd.concat([pd.read_csv(f) for f in files])
FileNotFoundError: [Errno 2] File file.csv does not exist:'file1.csv'

Answer 1

Try creating a new file with a name you are sure that doesn't exist before (in your entire computer), and check that it is created in the folder you think. Then try to read it.

Ok, now with your example. Please, note that

files = os.listdir(r"csvfilestoimport")
['file1.csv', 'file2.csv']

really means

['csvfilestoimport\file1.csv', 'csvfilestoimport\file2.csv']

So, you need to add this folder ( r"csvfilestoimport" +f)

df1 = pd.concat([pd.read_csv(r"csvfilestoimport\"+f) for f in files])

Answer 2

See this eg.

root_path = r"C:\Downloads"
filelist = glob.glob(f"{root_path}//*.csv")
df1 = pd.concat([pd.read_csv(f) for f in filelist])

Answer 3

os was my choice before I learned about pathlib .

---

from pathlib import Path


path = Path("C:\Downloads")
df = pd.concat([pd.read_csv(f) for f in path.rglob("*.csv")])

---

With pathlib you don't have to join directory and file manually.

Answer 4

In OS.chdir() try giving the full path of the downloads "C:\Users\xxxx\Downloads" and try again

os.chdir(r'C:\Users\xxxxx\Downloads')