In this task,after push "RUN IN CHECK" program return error,but operation "print(count)" and "print (i)" dont print anything in the output console below.Can you help me or tell me,where my mistake is.

def check_pangram(text): i=0 count="" for t in text: if t not in count: count+=str(t) print (count) for a in count: i+=1 print(count)
if i>=26: return True else: return False