After /wipe (GET), then the /predict (POST) also have a value output

[xtjjyygy]

To solve this problem, We should let clf=None, When we call /wipe(GET).
code show as below：
def wipe():
try:
shutil.rmtree('model')
os.makedirs(model_directory)
global clf
clf = None
return 'Model wiped'

except Exception as e:
    print(str(e))
    return 'Could not remove and recreate the model directory'

Thinks for sharing your code, have a good day.