Use Python string rfind method to find a sub string from right
Find a substring from right
We can search a sub from the end of a string back to the start by using rfind method. rfind method has the following syntax.
s.rfind(sub, [, start [, end]])
Like find, but scans from the end (right to left).
searchStr = "Red Blue Violet Green Blue Yellow Black"
print searchStr.rfind("Blue")
The code above generates the following result.