Completely new set of materials for GUI class! Thanks Tony!!

ProgrammingClassExamples/8a PSG (Data to plot from csv file).py

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+#Matplotlib, pyplt and csv
+#Tony Crewe
+#Sep 2017 - updated Sep 2018
+
+import matplotlib.pyplot as plt
+import csv
+from matplotlib.ticker import MaxNLocator
+
+
+x=[]
+y=[]
+
+with open('weight 2018.csv', 'r', encoding = 'utf-8-sig') as csvfile:
+    plots = csv.reader(csvfile)
+    for data in plots:
+        #get heading for x and y axes
+        var1 = (data[0])    
+        var2 = (data[1])
+        break
+    for data in plots:
+        #get values - add to x list and y list
+        x.append(data[0])   
+        y.append(float(data[1]))
+
+
+ax = plt.subplot(1,1,1)
+ax.set_ylim([82, 96])
+ax.xaxis.set_major_locator(MaxNLocator(10))
+ax.spines['right'].set_color('none')
+ax.spines['top'].set_color('none')
+
+plt.plot(x,y, label = 'data loaded\nfrom csv file')
+plt.axhline(y  = 85.5, color = 'orange', linestyle = '--', label = 'target')
+plt.xlabel(var1)
+plt.ylabel(var2)
+plt.title('weight loss from\n first quarter 2018')
+
+
+plt.legend()
+plt.show()