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python - in operator, float("NaN") and np.nan
    I used to believe that in operator in Python checks the presence of element in some collection using equality checking ... in deal with np.nan? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Random Sample of a subset of a dataframe in Pandas
    Say i have a dataframe with 100,000 entries and want to split it into 100 sections of 1000 entries. How do i ... next and so on. many thanks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - No Module Named ServerSocket
    I am trying to follow Example 20.17.4.1. SocketServer.TCPServer from Python Docs. But I get an error: ImportError: ... to get rid of this error. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python 3.x - context in nested serializers django rest framework
    If i have a nested serializer: class ChildSerializer(ModelSerializer): class Meta: fields = ('c_name', ) model ... the serializer is nested? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Optimising HDF5 dataset for Read/Write speed
    I'm currently running an experiment where I scan a target spatially and grab an oscilloscope trace at each ... horribly inefficient to run? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Making a bot that sends messages at a scheduled date with Discord.py
    I'm trying to make a bot that sends a scheduled message to a specific text channel. for example at the date ... time_check()) bot.run('token') See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How do global and local variables behave in this case?
    This is saved in my file function_local.py: x = 50 def func(x): print('x is', x) x = 2 print('Changed local ... , in the function, that x = 2? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python 3.x - Save and Load GUI-tkinter
    I want to save and load my GUI. I have made a GUI and I want that when I click on the save button. It ... ? I have tried pickle module, too. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How to save PySide tree view model structure
    Here is the link on other SO question QTreeView with custom items where is QTreeView example. Please, can anyone ... = '__main__': main() See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Closing current window when opening another window
    I have created a program in python 3.4 using the GUI module tkinter. I want to tweak the code so when a ... would be applicable for my code. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - TypeError: create_purple() takes 0 positional arguments but 2 were given
    I am brand new to Python programming and trying to make this program work. I have made this program work by ... Call the main function main() See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How do I pass a value back to this string?
    Summary: I have a microbit connected to a rpi-zero. I coded the microbit, when A button is pressed it will then ... ) p1.start() p2.start() See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Finding the correspondence of data from one data set in the other
    I have a catalogue of data and I want to use it in my MCMC code. What is crucial is the speed of ... ra and dec entries in the catalogue. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - pd.to_numeric converts entire series to NaN
    I'm trying to convert a column using pd.to_numeric, but for some reason it turns all values (except one) into ... , Length: 32314, dtype: object See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How to efficiently replace values in a large dataframe (100k+ rows) from another based on closest match?
    So I am using levenshire distance to find closest match and replace many values in a large data frame using ... the closest match in results See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - Space Invaders project
    I'm making a game similar to Space Invaders. Is there a way to check for an event like shooting less ... x+=move_x pygame.display.update() See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - how to merge 2 pandas daataframes base on multiple conditions faster
    I have 2 dataframes: df1: RB BeginDate EndDate Valindex0 0 00 19000100 19811231 45 1 00 19820100 19841299 47 2 ... =None) Any faster solution? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - One colorbar for multiple pandas subplots
    I cannot for the life of me figure out how to attach one colorbar for multiple pandas subplots. Almost all the other ... ], ax = plt.gca()) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How to make pyinstaller not use anaconda and build a small-size exe file
    I have been trying to build .exe file using pyinstaller in windows 10. It worked, but the size of the ... paths for pyinstaller and python? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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524 views
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python 3.x - RuntimeError: this event loop is already running
    I am trying to run an asynchronous 3rd party file upload using the following code in sanic def up(self, ... loop is already running. error See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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459 views
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python - How to merge two dicts and combine common keys?
    I would like to know how if there exists any python function to merge two dictionary and combine all values that have a ... k4: [v04, v14]}, ] See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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379 views
1 answer
python - Pyqt Gui Freezes while in loop
    Im making port scanner program with PyQt but Gui freezes when i activate loop.How can i fix that? I added time. ... () sys.exit(app.exec_()) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - string.upper(<str>) and <str>.upper() won't execute
    I have the following bit of code: def test(): fragment = '' fragment = raw_input('Enter input') while fragment not ... me what I'm doing wrong? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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python - How to convert list of elements to their default types
    for eg I have the List: old = ['Savannah', '234Today', '4.5678', '23456','0.2342429'] How can I ... , long Any help is Appreciated! Thank you See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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613 views
1 answer
python - Calculate Max of Sum of an annotated field over a grouped by query in Django ORM?
    To keep it simple I have four tables(A, B, Category and Relation), Relation table stores the Intensity of A in B ... (i.e id). any thoughts? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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765 views
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python - Pandas: calculate haversine distance within each group of rows
    The sample CSV is like this: user_id lat lon 1 19.111841 72.910729 1 19.111342 72.908387 2 19.111542 72.907387 ... do this? PS I am using pandas See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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146 views
1 answer
python - How to get a sublist of a list between two words
    Starting from a list like this: words = ['tree', 'water', 'dog', 'soap', 'bike', 'cat', 'bird'] I want to get ... = p->next; } printf("} "); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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334 views
1 answer
python TCP socket blocks on recv method
    i am currently trying to go through a basic tutorial on networking and i noticed that a rudimentary client/ ... would be appreciated, Thanks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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