Here's how I created a tree file viewer. I could have made a function to save all of the repetition, but I feel like there was an easier way I just didn't see it.

   root = dirc.AddRoot('Gene Library')
    #PHYLUM
    phylumpath = glob.glob("/Users/austinportal/Documents/GBA/*")
    phylum_name = os.listdir("/Users/austinportal/Documents/GBA/")
    phylumname = []
    trash963 = []
    for path in phylum_name:
        if path[0] is ".":
            trash963.append(".")
        else:
            phylumname.append(path)
    phylum_item = []

    a=0
    for phylum in phylumname:
        if phylum[0] is ".":
            trash963.append(".")
        else:
            phylum_item.append(dirc.AppendItem(root, phylum))
            dirc.SetPyData(phylum_item[a], phylumpath[a])
            a +=1

    genus_item = []

    #GENUS
    master_genus_path = []
    lc=0
    while lc < len(phylum_item):
        path = glob.glob("%s/*" % phylumpath[lc])
        for p in path:
            master_genus_path.append(p)
        lc+=1
    lc=0
    while lc < len(phylum_item):
        genuspath = glob.glob("%s/*" % phylumpath[lc])
        genusname = os.listdir("%s/" % phylumpath[lc])
        a=0
        for genus in genusname:
            if genus[0] is ".":
                trash963.append(".")
            else:
                genus_item.append(dirc.AppendItem(phylum_item[lc], genus))
                dirc.SetPyData(genus_item[-1], genuspath[a])
                a +=1
        lc+=1



    filedir = {}
    #SPECIES
    spec_item = []
    master_species_path = []
    lc=0
    while lc < len(genus_item):
        specpath = glob.glob("%s/*" % master_genus_path[lc])
        specname = os.listdir("%s/" % master_genus_path[lc])
        a=0
        for spec in specname:
            if spec[0] is ".":
                trash963.append(".")
            else:
                spec_item.append(dirc.AppendItem(genus_item[lc], spec))
                dirc.SetPyData(spec_item[-1], specpath[a])
                a +=1
        lc+=1
        for path in specpath:
            master_species_path.append(path)

    #STRAIN
    print master_species_path
    strain_item = []
    lc=0
    while lc < len(spec_item):
        strainpath = glob.glob("%s/*" % master_species_path[lc])
        strainname = os.listdir("%s/" % master_species_path[lc])
        a=0
        for strain in strainname:
            if strain[0] is ".":
                trash963.append(".")
            else:
                strain_item.append(dirc.AppendItem(spec_item[lc], strain))
                dirc.SetPyData(strain_item[-1], strainpath[a])
                a +=1
        lc+=1