python-2.7

问题 I have many columns in a data frame and I have to find the difference of time in two column named as in_time and out_time and put it in the new column in the same data frame. The format of time is like this 2015-09-25T01:45:34.372Z . I am using Pandas DataFrame. I want to do like this: df.days = df.out_time - df.in_time I have many columns and I have to increase 1 more column in it named days and put the differences there. 回答1: You need to convert the strings to datetime dtype, you can then

问题 so I need to implement a following scenario: - Several tasks are running simultaneously as processes. - Each task should display a progress bar with a "Cancel" button, clicking on which should terminate it. To achieve responsive GUI, I run the task for each process in a separate thread, and it seems that I need to create a separate wx.App for each process as well, otherwise the thread seems to be not running. This setup works fine, however: a) I am not sure whether multiple wx.App 's is a

问题 so I need to implement a following scenario: - Several tasks are running simultaneously as processes. - Each task should display a progress bar with a "Cancel" button, clicking on which should terminate it. To achieve responsive GUI, I run the task for each process in a separate thread, and it seems that I need to create a separate wx.App for each process as well, otherwise the thread seems to be not running. This setup works fine, however: a) I am not sure whether multiple wx.App 's is a

问题 I have an assignment in which I must create a list of tuples from a string. I do this by splitting the string with .split(). I then iterate over the list and add the items and the number of repetitions of each item into a dict, like so: for word in s: if word in count_dict: count_dict[word] += 1 else: count_dict[word] = 1 After this I create a list of tuples using: pairs = count_dict.items() Followed by: count_list = [] for pair in pairs: count_list.append(pair) count_list.sort(key=lambda x:

问题 Environment: CloudShell code : python2.7 I want to export Metrics from Cloud Monitoring to Big Query and google has given a solution on how to do this. I am following this in this below article: https://cloud.google.com/solutions/stackdriver-monitoring-metric-export I have downloaded the code from github: https://github.com/GoogleCloudPlatform/stackdriver-metrics-export and I am following the readme and trying to run the application in my google project. When I install and run any of the app

问题 I have a simple heap defined as a list of lists. I was using heapop from the heapq module to extract the list with the smallest key (which I learnt is implicitly the first element of the inner list). But in the following case, the pop operation seems to be giving unusual results. Can someone explain why? heap=[[0, 0, 0], [inf, 1, 1], [inf, 2, 2], [5, 3, 3], [inf, 4, 4]] heapq.heappop(heap) [0, 0, 0] heapq.heappop(heap) [inf, 1, 1] heapq.heappop(heap) [5, 3, 3] heapq.heappop(heap) [inf, 2, 2]

问题 I have a simple heap defined as a list of lists. I was using heapop from the heapq module to extract the list with the smallest key (which I learnt is implicitly the first element of the inner list). But in the following case, the pop operation seems to be giving unusual results. Can someone explain why? heap=[[0, 0, 0], [inf, 1, 1], [inf, 2, 2], [5, 3, 3], [inf, 4, 4]] heapq.heappop(heap) [0, 0, 0] heapq.heappop(heap) [inf, 1, 1] heapq.heappop(heap) [5, 3, 3] heapq.heappop(heap) [inf, 2, 2]

问题 I can't get the Django app to deploy to AWS EB. I'm deploying an Django 1.7 app. The readout from the log files is as follows. I only get an internal server error and have no idea how to fix this. Has anyone run into this before? ------------------------------------- /opt/python/log/supervisord.log ------------------------------------- 2016-05-03 15:22:57,677 CRIT Supervisor running as root (no user in config file) 2016-05-03 15:22:57,690 INFO RPC interface 'supervisor' initialized 2016-05-03

问题 I can't get the Django app to deploy to AWS EB. I'm deploying an Django 1.7 app. The readout from the log files is as follows. I only get an internal server error and have no idea how to fix this. Has anyone run into this before? ------------------------------------- /opt/python/log/supervisord.log ------------------------------------- 2016-05-03 15:22:57,677 CRIT Supervisor running as root (no user in config file) 2016-05-03 15:22:57,690 INFO RPC interface 'supervisor' initialized 2016-05-03

问题 I can't get the Django app to deploy to AWS EB. I'm deploying an Django 1.7 app. The readout from the log files is as follows. I only get an internal server error and have no idea how to fix this. Has anyone run into this before? ------------------------------------- /opt/python/log/supervisord.log ------------------------------------- 2016-05-03 15:22:57,677 CRIT Supervisor running as root (no user in config file) 2016-05-03 15:22:57,690 INFO RPC interface 'supervisor' initialized 2016-05-03