How to get final URL after redirection

[nishant bhakta]

I have a link that will redirect to any-other link and i have to work with that 
final link.
For example if i have a link "www.bit.ly/2V6CFi" that will redirect to 
"www.google.com".
Here i want that i take "www.bit.ly/2V6CFi" and find the final redirect link 
and append "#q=python" to that link and produce an output that is 
"www.google.com/#q=python".
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