import sys filename = input("Please enter filename: ") #open the file f=open(filename, "r") #read the file by line lines = f.readlines() #make a list of proteins that followed the header proteins = [] for line in lines: #cheak if is a hearder line if line[0] == '>': #append the header to the protein list header = line proteins.append([header]) else: proteins[-1].append(line); #print(proteins) #count numbers of proteins in the list def count_protein_number(list): count = -1 for item in list[1:]: for character in item: if item!='\n': count+=1 return count #loop through the list of headers following by proteins for protein in proteins: count = count_protein_number(protein) print(protein[0]) print(count,"",protein[1][0:10])
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