def choosedir(description, constraint):
print()
print(description)
while True:
choice = input("\nPath to the directory:\n--> ")
choice = cleanpath_escapedchars(choice)
ppath = PPath(choice)
# An existing file.
if ppath.is_file():
print()
print("The path points to a file !", end=" ")
# An existing directory.
elif ppath.is_dir():
if constraint == DIR_MUST_BE_NEW:
print()
print("We need a new directory !", end=" ")
elif constraint == DIR_MUST_BE_EMPTY and not ppath.is_empty():
print()
print("We need an empty directory !", end=" ")
else:
break
# A new directory.
else:
break
print("Try again.")
return ppath
