@@ -33,6 +33,7 @@ def seriesDemo():
3333
3434
3535def dataFrameDemo ():
36+ """This functions provides demo on pandas dataframe basics"""
3637d1 = {
3738"id" : [1 ,2 ,3 ],
3839"name" : ["Rohit" ,"Pooja" ,"Rajani" ]
@@ -67,7 +68,7 @@ def dataFrameDemo():
6768
6869
6970def dataframe_filter_demo ():
70- """Dataframeoperation """
71+ """This functions gives demo about pandas Dataframeto select rows on basis of condition """
7172
7273d3 = [random .randint (i ,i * 10 )for i in range (0 ,500 )]
7374d4 = ['A' ,'B' ,'C' ,'D' ,'E' ]* 100
@@ -94,6 +95,7 @@ def dataframe_filter_demo():
9495
9596
9697def dataframe_duplicate_demo ():
98+ """This functions gives demo to find duplicates in pandas dataframe and remove them"""
9799d = {
98100'id' : [1 ,2 ,3 ,4 ,5 ,1 ],
99101'name' : ['R' ,'O' ,'H' ,'I' ,'T' ,'R' ]
@@ -119,6 +121,7 @@ def dataframe_duplicate_demo():
119121
120122
121123def null_handling_demo ():
124+ """This functions gives demo to handle null values in pandas dataframe"""
122125d = {
123126'id' : [1 ,2 ,3 ,4 ,5 ,None ,8 ],
124127'name' : ['R' ,'O' ,'H' ,'I' ,'T' ,'C' ,None ]
@@ -140,6 +143,7 @@ def null_handling_demo():
140143
141144
142145def dataframe_add_rows ():
146+ """This functions gives demo to join two same pandas dataframes i.e. row-wise"""
143147d = {
144148'id' : [1 ,2 ,3 ,4 ,5 ],
145149'name' : ['R' ,'O' ,'H' ,'I' ,'T' ]
@@ -160,6 +164,7 @@ def dataframe_add_rows():
160164
161165
162166def dataframe_where_demo ():
167+ """This functions gives demo to use where function with pandas dataframe"""
163168d = {
164169'id' : [1 ,2 ,3 ,4 ,5 ],
165170'name' : ['R' ,'O' ,'H' ,'I' ,'T' ]
@@ -195,6 +200,7 @@ def dataframe_remove_rows():
195200
196201
197202def dataframe_join_demo ():
203+ """This functions gives demo to use 'join' function with pandas dataframes"""
198204emp_data = {
199205'emp_id' : [10 ,20 ,30 ,40 ,50 ,60 ],
200206'emp_name' : ["Rohit" ,"Pooja" ,"Rajani" ,"Rushi" ,"Rutu" ,"Prithvi" ],
@@ -221,6 +227,7 @@ def dataframe_join_demo():
221227
222228
223229def dataframe_merge_demo ():
230+ """This functions gives demo to use 'merge' function with pandas dataframes"""
224231emp_data = {
225232'emp_id' : [10 ,20 ,30 ,40 ,50 ,60 ],
226233'emp_name' : ["Rohit" ,"Pooja" ,"Rajani" ,"Rushi" ,"Rutu" ,"Prithvi" ],
@@ -244,6 +251,7 @@ def dataframe_merge_demo():
244251
245252
246253def datframe_export_file ():
254+ """This functions gives demo to export pandas dataframes to files like csv, json"""
247255emp_data = {
248256'emp_id' : [10 ,20 ,30 ,40 ,50 ,60 ],
249257'emp_name' : ["Rohit" ,"Pooja" ,"Rajani" ,"Rushi" ,"Rutu" ,"Prithvi" ],
@@ -273,6 +281,7 @@ def datframe_export_file():
273281
274282
275283def dataframe_read_json_export_to_parquet ():
284+ """This functions gives demo to read files like csv, json and stored result in parquet format"""
276285json_file_path = os .getcwd ()+ "/data/employee_details/employee.json"
277286parquet_file_path = os .getcwd ()+ "/data/employee_details/parquet/"
278287df = pd .read_json (json_file_path )