python-2.7

问题 I wish to uninstall Python 2.7 and all packages connected to it. I initially installed Python from the official website and I installed all packages using the pip install command. Would uninstalling Python from the control panel also uninstall all packages automatically? The reason I want to uninstall Python is because I want to use Anaconda in order to be able to manage packages more easily and also be able to install both Python 2 and 3 to switch between them back and forth. 回答1: If you

问题 I wish to uninstall Python 2.7 and all packages connected to it. I initially installed Python from the official website and I installed all packages using the pip install command. Would uninstalling Python from the control panel also uninstall all packages automatically? The reason I want to uninstall Python is because I want to use Anaconda in order to be able to manage packages more easily and also be able to install both Python 2 and 3 to switch between them back and forth. 回答1: If you

问题 I have a dictionary that has values sometimes as strings, and sometimes as a functions. For the values that are functions is there a way to execute the function without explicitly typing () when the key is accessed? Example: d = {1: "A", 2: "B", 3: fn_1} d[3]() # To run function I want: d = {1: "A", 2: "B", 3: magic(fn_1)} d[3] # To run function 回答1: Another possible solution, is to create a custom dictionary object that implements this behavior: >>> class CallableDict(dict): ... def _

问题 I have a dictionary that has values sometimes as strings, and sometimes as a functions. For the values that are functions is there a way to execute the function without explicitly typing () when the key is accessed? Example: d = {1: "A", 2: "B", 3: fn_1} d[3]() # To run function I want: d = {1: "A", 2: "B", 3: magic(fn_1)} d[3] # To run function 回答1: Another possible solution, is to create a custom dictionary object that implements this behavior: >>> class CallableDict(dict): ... def _

问题 I have a dictionary that has values sometimes as strings, and sometimes as a functions. For the values that are functions is there a way to execute the function without explicitly typing () when the key is accessed? Example: d = {1: "A", 2: "B", 3: fn_1} d[3]() # To run function I want: d = {1: "A", 2: "B", 3: magic(fn_1)} d[3] # To run function 回答1: Another possible solution, is to create a custom dictionary object that implements this behavior: >>> class CallableDict(dict): ... def _

问题 I have a dictionary that has values sometimes as strings, and sometimes as a functions. For the values that are functions is there a way to execute the function without explicitly typing () when the key is accessed? Example: d = {1: "A", 2: "B", 3: fn_1} d[3]() # To run function I want: d = {1: "A", 2: "B", 3: magic(fn_1)} d[3] # To run function 回答1: Another possible solution, is to create a custom dictionary object that implements this behavior: >>> class CallableDict(dict): ... def _

问题 I have a project with 2 apps project/ blog/ templates/ index.html polls/ templates/ index.html project/ templates/ base.html index.html Now i want that the two apps extends the projects base.html . Is this the way to go? how it is possible and are there better solutions? There is already an question which is handling this question, but it's only worth mentioning if you dont use split directories: Django project base template tl;dr: I want to use split directories and want to know how to

问题 What if, when a user is using my Python application and the application crashes, the state of the application can be saved to a file and sent to me, the developer? I open the Python interpreter and start debugging from the point where the user crashed. To clarify, when I'm debugging an application and it raises an unhandled exception, I can debug the application post-mortem, getting access to all the local variables and their values which is crucial to quickly fixing bugs. When an user's

问题 I have a dictionary. I want to calculate average of values for each key and print result so that the result shows key and associated average. The following code calculates mean but I don't know how to associate key with the average. My desired answer is Mean = {22:average1, 23:average2, 24:average3}. mydict = {22: [1, 0, 0, 1], 23: [0, 1, 2, 1, 0], 24: [3, 3, 2, 1, 0]} Mean =[float(sum(values)) / len(values) for key, values in mydict.iteritems()] 回答1: Don't use a list comprehension. Use a

问题 I was wondering if any of you Tkinter experts out there could help me with a question, do any of you know if there is a alternative to packs fill=X or fill=Y commands for grids? Or some code that would add in this function? (I have searched around for a bit and couldn't find anything) 回答1: Use the sticky attribute to make objects fill the row and/or column that they are in. Apply a weight to the rows and/or columns to get them to use any extra space in the container using grid_rowconfigure