# Blok of language selection
lan = input('Enter the input language (ru, en) ')
while lab == 'en' or 'ru':
    if lan == 'en':
	    alf = ('qwertyuiopasdfghjklzxcvbnm')
    if lan == 'ru':
        alf_en = ('йцукенгшщзхъфывапролджэячсмитьбю')
    else:
        print ("Incorrect enter. Try again.")
    # The function of panagram definition
    def pang_test(text):
	    alf_en = ('qwertyuiopasdfghjklzxcvbnm')
	    # Removing spaces
	    new_alf = ('')
	    for let in text:
		    if let == str(' '):
			    text = text.replace(let,'')
			# Blok of panagram definition
		    for my_let in text:
			    if my_let in alf_en:
			        alf_en = alf_en.replace(my_let,'')
			        continue
                if alf_en == (''):
				            print ('This text is pangram')
                elif lan == 'en' and let == 'ю':
				            print ('Invalid input language')
		            elif: lan == 'ru' and let == 'm':
				            print ('Invalid input language')
		    	      else:
		 		            print ('This text is not pangram')
	pang_test('the quick brown fox jumps over the lazy dog')