Eliminate duplicates skipping same key and values

Question

[felipelira3]

Files to test can be downloaded from https://github.com/felipelira/files_to_test.git

I want to retrieve the information from several files in one folder and create a table with the information as a dictionary to create a table after.

#!/usr/bin/env python

import os
import sys
from Bio import SeqIO
from Bio import GenBank

dict1 = {}

input_file = open(sys.argv[1], "r")

for seq_record in SeqIO.parse(input_file, "genbank"):
    for seq_feature in seq_record.features:
        if seq_feature.type=="source":
            try:
                source = seq_feature.qualifiers['organism'][0]
            except (KeyError, IndexError):
                source = 'n/a'
            try: 
                strain = seq_feature.qualifiers['strain'][0]
            except (KeyError, IndexEror):
                strain = 'n/a'
            try:
                country = seq_feature.qualifiers['country'][0]
            except (KeyError, IndexError):
                country = 'n/a'
            try:
                host = seq_feature.qualifiers['host'][0]
            except (KeyError, IndexError):
                host = 'n/a'
            try:
                plasmid = seq_feature.qualifiers['plasmid'][0]
            except (KeyError, IndexError):
                plasmid = 'n/a'
            try:
                pathovar = seq_feature.qualifiers['pathovar'][0]
            except (KeyError, IndexError):
                pathovar = 'n/a'


# Here I have the concatenation of values that I need for the table

            value = strain , pathovar , host , plasmid

# Here is where I want to feed the dictionary but refusing if the key and value is already present.
        if source not in dict1.keys() and value not in dict1.values():
            dict1[source] = value
        else:
            if source in dict1.keys() and value != dict1[source]:
            #if source in dict1.keys() and value not in dict1.values():
                dict1[source] = value

For the file Pseudomonas_syringae_pv._actinidiae_ICMP_9853.gbk , that contains 3 sequences, I have this:

{'Pseudomonas syringae pv. actinidiae ICMP 9853': ('ICMP 9853', 'actinidiae', 'Actinidia', 'n/a')}
{'Pseudomonas syringae pv. actinidiae ICMP 9853': ('ICMP 9853', 'actinidiae', 'Actinidia', 'p9853_A')}
{'Pseudomonas syringae pv. actinidiae ICMP 9853': ('ICMP 9853', 'actinidiae', 'Actinidia', 'p9853_B')}

For the other (Pseudomonas_syringae_str.ICMP_3690_scaffold1.gbk), because it is a scaffold, I have this:

{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}
{'Pseudomonas syringae': ('ICMP 3690', 'n/a', 'n/a', 'n/a')}

The expected result is to obtains just only one key and value for the second sequence and three (or more) for the genomes with sequences such as plasmids.