I would like to know how to build an Irish coastline in Basemap. I would like to build the whole of Great Britain with the help of Basemap, however I cannot force the Irish coastline to plot. I also tried map.drawcountries(linewidth = 0.2), map.fillcontinents(color = 'lightgray', zorder = 0)and map.drawmapboundary(linewidth = 0.2), but none of them give the coastline that I use.
I am sure that Ireland has a coastline, as I saw it in real life. Thank you in advance.

from mpl_toolkits.basemap import Basemap
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
map = Basemap(projection='merc', lat_0 = 55, lon_0 = -4,
resolution = 'i', area_thresh = 0.05,
llcrnrlon=-9, llcrnrlat=49,
urcrnrlon=2, urcrnrlat=61)
map.drawcoastlines(linewidth = 0.2, zorder = 0)
plt.show()
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