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python concurrent.futures.ProcessPoolExecutor: Performance of .submit() vs .map()
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python - Calculate angle (clockwise) between two points
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python - Get full traceback
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python 2.7 - pip is error,TypeError: __call__() takes exactly 2 arguments (1 given)
system centos 7.2 Python 2.7.5 install I install webhook pip install webhook ### but hava error,then yum install ... So,what should I do?! See Question&Answers more detail:os...
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python - How does the pyspark mapPartitions function work?
So I am trying to learn Spark using Python (Pyspark). I want to know how the function mapPartitions work ... I achieve that using mapPartitions. See Question&Answers more detail:os...
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python requests - POST Multipart/form-data without filename in HTTP request
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python - virtualenv(python3.4), pip install mysqlclient error
I created virtualenv for django 1.9 project. I am trying to pip install mysqlclient or mysql-python ... cdxcssp9/mysqlclient any suggestions!? See Question&Answers more detail:os...
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python - what is the difference between Flatten() and GlobalAveragePooling2D() in keras
I want to pass the output of ConvLSTM and Conv2D to a Dense Layer in Keras, what is the difference between ... (Dense(256,activation='relu')) See Question&Answers more detail:os...
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python - Generating all 5 card poker hands
This problem sounds simple at first glance, but turns out to be a lot more complicated than it seems. It's got ... 've gone wrong in my attempt? See Question&Answers more detail:os...
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python - Plotting results of Pandas GroupBy
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python - Multiple outputs in Keras
I have a problem which deals with predicting two outputs when given a vector of predictors. Assume that a ... outputs in the final layer. See Question&Answers more detail:os...
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python - Celery Worker Database Connection Pooling
I am using Celery standalone (not within Django). I am planning to have one worker task type running on multiple ... some other way to do this? See Question&Answers more detail:os...
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python - How to retain column headers of data frame after Pre-processing in scikit-learn
I have a pandas data frame which has some rows and columns. Each column has a header. Now as long as I ... manipulation on my pandas data frame. See Question&Answers more detail:os...
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python - pip3 error - '_NamespacePath' object has no attribute 'sort'
I tried to install a package through pip3, and I got this error. Every pip/pip3 command that I run gives me this ... 16.04 with Python 3.5.2 See Question&Answers more detail:os...
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python 3.x - Error while finding spec for 'fibo.py' (<class 'AttributeError'>: 'module' object has no attribute '__path__')
I have a module in a fibo.py file which has the following functions - #fibonacci numbers module def fib(n): # ... not sure how to fix this. See Question&Answers more detail:os...
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python - Retrieving Data from SQL Using pyodbc
I am trying to retrieve data from an SQL server using pyodbc and print it in a table using Python. ... suggestions would be greatly appreciated. See Question&Answers more detail:os...
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python - Debugging with PyCharm terminal arguments
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python and sys.argv
if len(sys.argv) < 2: sys.stderr.write('Usage: sys.argv[0] ') sys.exit(1) if not os.path.exists(sys.argv[ ... the sys.argv's by stderr or not. See Question&Answers more detail:os...
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python - numpy divide row by row sum
How can I divide a numpy array row by the sum of all values in this row? This is one example. But I'm pretty ... ], [ 0.16666667, 0.83333333]]) See Question&Answers more detail:os...
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python - Filter df when values matches part of a string in pyspark
I have a large pyspark.sql.dataframe.DataFrame and I want to keep (so filter) all rows where the URL saved ... properly? Many thanks in advance! See Question&Answers more detail:os...
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python - Clear all items from the queue
How can I clear a queue. For example I have datas in a queue, but for some reason I don't need the ... this work: oldQueue = Queue.Queue() See Question&Answers more detail:os...
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python - Copy all values in a column to a new column in a pandas dataframe
This is a very basic question, I just can not seem to find an answer. I have a dataframe like this, ... . Any help is greatly appreciated. See Question&Answers more detail:os...
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python - What is the difference between socket.send() and socket.sendall()?
I'm confused about socket.send() and socket.sendall() functions in Python. As I understand from the ... web applications? Thank you. See Question&Answers more detail:os...
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python - substring of an entire column in pandas dataframe
I have a pandas dataframe "df". In this dataframe I have multiple columns, one of which I have to substring. ... take a very long time process. See Question&Answers more detail:os...
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python - What is the difference between chain and chain.from_iterable in itertools?
I could not find any valid example on the internet where I can see the difference between them and why to choose one over the other. See Question&Answers more detail:os...
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python - cannot import name patterns
Before I wrote in urls.py, my code... everything worked perfectly. Now I have problems - can't go to my ... said what error is somewhere here. See Question&Answers more detail:os...
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python - sqlalchemy IS NOT NULL select
How can I add the filter as in SQL to select values that are NOT NULL from a certain column ? SELECT ... ).select_from(table).where(all_filters) See Question&Answers more detail:os...
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python - dynamically set database based on request in django
I am writing a multi-tenant application with python-django. I want to set database connection based on each ... feasible, and lastly How? See Question&Answers more detail:os...
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