Open Reading Frames

import sys
import os
from Bio import SeqIO

##AA=''

amino_acids={'AUG':'M','UUU':'F','UUC':'F','UUA':'L','UUG':'L','UCU':'S',
                 'UCC':'S','UCA':'S','UCG':'S','CUU': 'L','AUU': 'I','GUU': 'V',
                 'CUC': 'L','AUC': 'I','GUC': 'V','CUA': 'L','AUA': 'I','GUA': 'V',
                 'CUG': 'L','GUG': 'V','CCU': 'P', 'ACU': 'T','GCU': 'A','CCC': 'P',
                 'ACC': 'T','GCC': 'A','CCA': 'P','ACA': 'T','GCA': 'A','CCG': 'P',
                 'ACG': 'T','GCG': 'A','UAU': 'Y','CAU': 'H','AAU': 'N','GAU': 'D',
                 'UAC': 'Y','CAC': 'H','AAC': 'N','GAC': 'D','UAA': '*','CAA': 'Q',
                 'AAA': 'K','GAA': 'E','UAG': '*','CAG': 'Q','AAG': 'K','GAG': 'E',
                 'UGU': 'C','CGU': 'R','AGU': 'S','GGU': 'G','UGC': 'C','CGC': 'R',
                 'AGC': 'S','GGC': 'G','UGA': '*','CGA': 'R','AGA': 'R','GGA': 'G',
                 'UGG': 'W','CGG': 'R','AGG': 'R','GGG': 'G','UAA':'*'}

fopen=open(sys.argv[1])
for seq_records in SeqIO.parse(fopen,"fasta"):
    record=seq_records.seq
    records=record.transcribe()
        
#print(AA[AA.find('M'):AA.find('*')])
#print frame and reversecomp frame
    def translate (x):
        AA=''
        aaseq=''
        for i in range(len(x)//3):
            codon=x[3*i:3*i+3] 
            aa=amino_acids[codon]
            AA+=codon
            aaseq+=aa
    #        if x[2] in codon=='N':
    #            Nlist=[]
            
            
        return ''.join(aaseq)
    A=translate(records[0:])
    B=translate(records[1:])
    C=translate(records[2:])
    

    def Dcomplement(base):
        complements={'A': 'U','C':'G','U':'A','G':'C'}

        return complements[base]

    def Rcomplementary_seq(seq):
        complement = ''
        for char in seq:
           complement += Dcomplement(char) #concatenates first complement with first one ouputed     
        s1=''.join(reversed(complement))  #joins the string together in a reverse order
        return s1

    tran=Rcomplementary_seq(records) #assigned a varable to the reverse complement function

    D=translate(tran[0:])
    E=translate(tran[1:])
    F=translate(tran[2:])
    openreading=[A,B,C,D,E,F]
    #print(openreading)
    position=[]
    orf = []
    orf_unique=[]
    for start in openreading:
        for p in range(0,len(start)):
            if start[p]=='M':
                protein=start[p:]
                position.append(protein)
    #print(position)
    for s in position:
        if '*' in s:
            orf.append(s[s.find('M'):s.find('*')])
    for l in orf:
        if l not in orf_unique:
            orf_unique.append(l)
    #print(orf_unique)
    for o in orf_unique:
        print(o)