check if input is correct before proceeding

[Pedroski55]

I need to enter the path to the files I want to manipulate, by name pathToExcel, pathToPhotos. A few times I got it wrong and the program did not run. I had to start again.

What I would like is a little loop that prints the input, asks if it is correct, then proceeds. If the input is wrong, it should ask for new input.

I'm thinking along the lines of:

while True:
	print('enter the path to the excel file or enter nothing to stop): ')
	path = input()
	print('Is this path correct? ' + path)

but what should I put next? What is the best way to do this?

[rdx]

The thing to do (IMO) is to check the path entered for validity, to see if the file exists. If not, then you can loop back and ask for another try.