Clarified the bar chart plotting code

Author: jerekapyaho

ev_counts.py

@@ -43,18 +43,16 @@
 
 import matplotlib.pyplot as plt
 
-values = [counts[k] for k in sorted(list(counts.keys()))]
-plt.bar(sorted(list(counts.keys())), values, 
-    tick_label=sorted(list(counts.keys())))
+year_keys = sorted(list(counts.keys()))
+#print(year_keys)
+
+values = [counts[k] for k in year_keys]
+#print(values)
+
+plt.bar(year_keys, values, tick_label=year_keys)
 plt.show()
 
 # HUOM.! Jos saat ilmoituksen "serWarning: Matplotlib is 
 # currently using agg, which is a non-GUI backend, so 
 # cannot show the figure.", niin ratkaisu on 
 # asentaa Tkinter: `sudo apt-get install python3-tk`
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