def removeLastOccurrenceOfAWordFromAString(s, word):
# Find the position of the last occurrence of word in str
pos = s.rfind(word)
if pos == -1:
return s
s = s[:pos] + s[pos + len(word):]
return s
s = "python c python c++ java python php";
word = "python"
print(removeLastOccurrenceOfAWordFromAString(s, word))
'''
run:
python c python c++ java php
'''