[Biopython] Error with DSSP module

[Hrishikesh Dhondge]

Hello everyone,
I'm facing a problem with the DSSP module in Biopython. I am trying to
compute solvent accessible surface area from the PDB file.
I used the same block of code as given in the biopython wiki:

https://biopython.org/docs/1.78/api/Bio.PDB.DSSP.html?highlight=dssp#module-Bio.PDB.DSSP

But after running it returns nothing and gives the following error:

a_key = list(dssp.keys())[2]
IndexError: list index out of range

Any suggestions would be appreciated. Thanks in advance!

-- 
With regards
Hrishikesh Dhondge
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