def gene_plot(d, geneid, lfc, lfc_thr, pv_thr, genenames, gfont, pv, gstyle):
    if genenames is not None and genenames == "deg":
        for i in d[geneid].unique():
            if (d.loc[d[geneid] == i, lfc].iloc[0] >= lfc_thr[0] and d.loc[d[geneid] == i, pv].iloc[0] < pv_thr[0]) or \
                    (d.loc[d[geneid] == i, lfc].iloc[0] <= -lfc_thr[1] and d.loc[d[geneid] == i, pv].iloc[0] < pv_thr[1]):
                if gstyle == 1:
                    plt.text(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0], i,
                                  fontsize=gfont)
                elif gstyle == 2:
                    plt.annotate(i, xy=(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0]),
                                 xycoords='data', xytext=(5, -15), textcoords='offset points', size=6,
                                 bbox=dict(boxstyle="round", alpha=0.1),
                                 arrowprops=dict(arrowstyle="wedge,tail_width=0.5", alpha=0.1, relpos=(0, 0)))
                else:
                    print("Error: invalid gstyle choice")
                    sys.exit(1)
    elif genenames is not None and type(genenames) is tuple:
        for i in d[geneid].unique():
            if i in genenames:
                if gstyle == 1:
                    plt.text(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0], i,
                                  fontsize=gfont)
                elif gstyle == 2:
                    plt.annotate(i, xy=(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0]),
                                 xycoords='data', xytext=(5, -15), textcoords='offset points', size=6,
                                 bbox=dict(boxstyle="round", alpha=0.1),
                                 arrowprops=dict(arrowstyle="wedge,tail_width=0.5", alpha=0.1, relpos=(0, 0)))
                else:
                    print("Error: invalid gstyle choice")
                    sys.exit(1)
    elif genenames is not None and type(genenames) is dict:
        for i in d[geneid].unique():
            if i in genenames:
                if gstyle == 1:
                    plt.text(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0],
                                  genenames[i], fontsize=gfont)
                elif gstyle == 2:
                    plt.annotate(genenames[i], xy=(d.loc[d[geneid] == i, lfc].iloc[0], d.loc[d[geneid] == i, 'logpv_add_axy'].iloc[0]),
                                 xycoords='data', xytext=(5, -15), textcoords='offset points', size=6,
                                 bbox=dict(boxstyle="round", alpha=0.1),
                                 arrowprops=dict(arrowstyle="wedge,tail_width=0.5", alpha=0.1, relpos=(0, 0)))
                else:
                    print("Error: invalid gstyle choice")
                    sys.exit(1)