s = "python c++ c c# java"
words_list = s.split(' ')
shortest = min((word for word in words_list if word), key=len)
largest = max((word for word in words_list if word), key=len)
print("The largest word is: " + largest)
print("The smallest word is: " + shortest)
'''
run:
The largest word is: python
The smallest word is: c
'''