explore_datetime.py

appIdCondition = df['appId'].notnull()
dateCondition = df['date'].str.len() == 17
df = df[np.logical_and(appIdCondition, dateCondition)][['appId', 'date', 'dataSource']]

print(df)
print(df.count())

# Result
                                appId               date        dataSource
6                  #10_Perfectly Clear  26:07:13:08:31:49  PlayStore_Random
13     #10_Fotocollage Bildbearbeitung  25:11:13:02:26:01  PlayStore_Random
20                        #2_flipagram  11:01:14:06:00:35  PlayStore_Random
33     #10_Fotocollage Bildbearbeitung  14:01:14:16:46:44  PlayStore_Random
77                            #3_skype  13:01:14:14:02:21  PlayStore_Random
128  #5_Pho to Lab PRO Fotobearbeitung  11:10:13:17:42:57  PlayStore_Random
149  #5_Pho to Lab PRO Fotobearbeitung  18:12:13:17:58:44  PlayStore_Random
163                       #2_flipagram  01:01:14:06:38:29  PlayStore_Random
165                       #6_MomentCam  30:12:13:05:41:47  PlayStore_Random
172    #10_Fotocollage Bildbearbeitung  10:01:14:17:45:10  PlayStore_Random
205                   #3_Seitenmanager  17:11:13:17:31:34  PlayStore_Random
217  #7_Cymera - Camera & Photo Editor  25:12:13:06:53:35  PlayStore_Random
231                #6_Photo Studio PRO  09:01:14:00:28:40  PlayStore_Random
260                  #9_subway_surfers  08:12:13:17:20:22  PlayStore_Random
262                       #6_MomentCam  31:12:13:03:13:42  PlayStore_Random
264                    #5_officesuite7  15:12:13:20:53:04  PlayStore_Random
268                  #1_Camera Zoom FX  21:11:13:23:23:35  PlayStore_Random
272                           #5_viber  14:01:14:11:47:04  PlayStore_Random
273                       #2_flipagram  02:01:14:01:26:45  PlayStore_Random
276                           #3_skype  12:01:14:15:37:06  PlayStore_Random
280                        #8_gmx mail  08:01:13:16:18:28  PlayStore_Random
282                     #9_Camera FV-5  17:11:13:09:20:24  PlayStore_Random
288                  #1_Camera Zoom FX  24:12:13:18:23:21  PlayStore_Random
289                       #1_quizduell  09:12:13:18:59:08  PlayStore_Random
290                #4_antivirus GRATIS  07:01:14:02:36:25  PlayStore_Random
291                        #8_gmx mail  09:04:13:06:05:19  PlayStore_Random
294                           #3_skype  11:01:14:23:52:32  PlayStore_Random
308                  #1_Camera Zoom FX  25:04:13:06:49:10  PlayStore_Random
314                 #6_stickman_soccer  29:11:13:18:50:29  PlayStore_Random
318                      #4_sonic_dash  14:12:13:14:31:34  PlayStore_Random
..                                 ...                ...               ...
697                           #3_skype  12:01:14:13:47:22  PlayStore_Random
698                  #1_Camera Zoom FX  23:04:13:06:28:37  PlayStore_Random
700     #9_Perfect365 Gesichts-Make-Up  07:01:14:19:36:33  PlayStore_Random
701                   #3_Seitenmanager  26:12:13:02:55:42  PlayStore_Random
702                  #1_Camera Zoom FX  11:06:13:14:38:42  PlayStore_Random
704               #6_androidOpenOffice  02:12:13:13:44:04  PlayStore_Random
705                     #8_XDA Premium  01:10:13:17:34:02  PlayStore_Random
706     #9_Perfect365 Gesichts-Make-Up  05:01:14:00:22:53  PlayStore_Random
709                         #6_firefox  14:01:14:02:59:21  PlayStore_Random
710              #2_facebook messenger  12:01:14:10:08:23  PlayStore_Random
714                   #2_traffic_racer  08:12:13:20:26:56  PlayStore_Random
715                    #5_officesuite7  17:12:13:13:04:19  PlayStore_Random
716                   #6_Antivirus PRO  18:12:12:20:37:37  PlayStore_Random
717                #4_antivirus GRATIS  04:01:14:08:45:27  PlayStore_Random
718                       #2_flipagram  08:01:14:20:18:39  PlayStore_Random
719  #7_Cymera - Camera & Photo Editor  10:01:14:15:15:01  PlayStore_Random
722                        #8_gmx mail  09:08:13:05:52:35  PlayStore_Random
723                           #3_skype  13:01:14:10:06:33  PlayStore_Random
724             #10_line gratis anrufe  09:01:14:14:03:00  PlayStore_Random
725                  #9_subway_surfers  14:12:13:14:35:36  PlayStore_Random
726                    #1_Teamspeack 3  11:11:13:00:01:24  PlayStore_Random
727                    #1_Teamspeack 3  11:11:13:00:01:24  PlayStore_Random
729               #6_androidOpenOffice  12:12:13:05:08:50  PlayStore_Random
730                 #6_stickman_soccer  11:12:13:15:07:06  PlayStore_Random
732                #4_antivirus GRATIS  06:01:14:04:21:53  PlayStore_Random
733                             #7_pou  14:12:13:19:24:10  PlayStore_Random
734                   #3_Seitenmanager  28:12:13:03:14:04  PlayStore_Random
735           #3_ Wondershare PowerCam  19:12:13:23:55:54  PlayStore_Random
738                             #7_pou  11:12:13:20:19:25  PlayStore_Random
739                    #1_Teamspeack 3  07:10:13:18:55:32  PlayStore_Random

[161 rows x 3 columns]
appId         161
date          161
dataSource    161
dtype: int64