Adding source code files for Chapter 6

Chapter6/mypandas/operations/pandas3.py

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+# pandas3.py
+import pandas as pd
+
+weekly_data = {'day':['Monday','Tuesday', 'Wednesday', 'Thursday',
+                      'Friday', 'Saturday', 'Sunday'],
+                'temp':[40, 33, 42, 31, 41, 40, 30],
+                'condition':['Sunny','Cloudy','Sunny','Rain','Sunny',
+                        'Cloudy','Rain']
+        }
+
+df = pd.DataFrame(weekly_data)
+df.index = ['MON', 'TUE','WED','THU','FRI','SAT','SUN']
+#Provide row with label TUE
+print(df.loc['TUE'])
+#Provide two rows with label TUE and WED
+print(df.loc[['TUE','WED']])
+#provide a temp value from row with label FRI
+print(df.loc['FRI','temp'])
+#Provide a row with index 2
+print(df.iloc[2])
+#provide a value from a location with
+# row index 2 and column index 2
+print(df.iloc[2,2])
+