TypeError: cannot unpack non-iterable int object for list

Question

I have a list which contains the frame, start codon position, stop codon position, sequence of the gene, and gene length. Both sequence and length are based on the start and stop. I wanted to unpack this list and add frame, start/stop positions, sequence, and gene length for genes with a certain length to another list. My code is as follows:

for framenumber, startposition, stopposition, geneseq, genelength in range(len(codonpairsfwd)):
    if len(gene_seq) < 200:
        GenesToRemove_Fwd.append(framenumber)
        GenesToRemove_Fwd.append(startposition)
        GenesToRemove_Fwd.append(stopposition)
        GenesToRemove_Fwd.append(geneseq)
        GenesToRemove_Fwd.append(genelength)

and I get this error message: TypeError: cannot unpack non-iterable int object for the first line(ie line with for loop).

Any ideas where I might be going wrong would super appreciated

Answer 1

range() will list numbers (int) to loop, so you cannot unpack that number onto framenumber, startposition, stopposition, ... etc... as it's only an integer, starting from 0 and ends with len(codonparisfwd).