Recent questions tagged Python

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python - How to write a dictionary into an existing file?

Let's say I have a dictionary and I want to write it into an existing file. How can I do so ... the filename correctly contains the dictionary. 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 - Plotting a time series?

I'm really new to using python as a data analysis tool, and it's my first time ever dealing with time series. ... doing? EDIT: Here's the graph 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 - Convert images to webP using Pillow

I'm trying to convert .jpg images to webp format using PIL. I'm using the this code: from PIL import Image import ... >>> PIL.VERSION '1.1.7' 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 - Python3 installed successfully, but cannot be opened in terminal

Yesterday I've reinstalled my Mac OS X 10.8, before this reinstallation there were python2.7.5 and ... Specific Information: abort() called 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 - Numpy matrix power/exponent with modulo?

Is it possible to use numpy's linalg.matrix_power with a modulo so the elements don't grow larger than a certain value? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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311 views

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python - In scipy's ConvexHull, what does "area" measure?

The value of the "area" attribute in scipy ConvexHull (see http://docs.scipy.org/doc/scipy/reference/generated/scipy. ... does "area" give us? 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 2.7 - Pandas Dataframe ValueError: Shape of passed values is (X, ), indices imply (X, Y)

I am getting an error and I'm not sure how to fix it. The following seems to work: def random(row): ... add another column I get 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 - after pip successful installed: ModuleNotFoundError

I am trying to install the SimPy module so that I can use it in IDLE. However, everytime I try to import in ... 'simpy' How can I solve this? 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 - Is it possible to np.concatenate memory-mapped files?

I saved a couple of numpy arrays with np.save(), and put together they're quite huge. Is it possible ... ever loading anythin into memory? 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 - AttributeError: module 'numpy' has no attribute '__version__'

I updated my computer today, and am getting the following error message when I attempt to import ... ._NamespaceLoader at 0x2033a3c8080> 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 extract the bits of larger numeric Numpy data types

Numpy has a library function, np.unpackbits, which will unpack a uint8 into a bit vector of length 8. Is ... is our pack and unpack functions. 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 - Mypy error - incompatible types in assignment

My function looks like this simplified code sample: def my_func() -> dict: result = {"success": False} if ... or is this some mypy bug? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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447 views

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python - Pandas: Ternary conditional operator for setting a value in a DataFrame

I have a dataframe pd. I would like to change a value of column irr depending on whether it is ... ternary conditional operator for 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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309 views

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python - From TimeDelta to float days in Pandas

I have a TimeDelta column with values that look like this: 2 days 21:54:00.000000000 I would like to have ... object Dist_m 922 non-null int64 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.9k views

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python - Image size of 1005x132589 pixels is too large. It must be less than 2^16 in each direction

I am using matplotlib.pyplot to plot a graph from a Dataframe. I want to show the height of the bar ... Jupyter Notebook, Pandas, Python3. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

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python 3.x - How can I subsample an array according to its density? (Remove frequent values, keep rare ones)

I have this problem that I want to plot a data distribution where some values occur frequently while others are ... are in a given location See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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220 views

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python - How can I find a process by name and kill using ctypes?

On Windows, I want to find a process by the name of 'exename.exe', and then kill it. How can I do it by ctypes not any other 3rd-party module? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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194 views

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python - Monitor remote FTP directory

I only have FTP access to a directory on a remote server and would like to get the contents of new files as ... monitor for new files over FTP? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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python - Content of infobox of Wikipedia

I need to get the content of an infobox of any movie. I know the name of the movie. One way is to get ... API, please mention that as well. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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167 views

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python while processing several columns with a UDF

I have a DataFrame with many columns of str type, and I want to apply a function to all those columns, without ... or what I am 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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252 views

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python - How do you invoke the /poll command using the Slack API?

My slack channel supports the /poll command from the Simple Poll app. How do you invoke this command using the ... it needs for this case. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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400 views

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python - pyGame in a thread

I want to use a pyGame program as a part of another process. Using the following code, pyGame doesn't seem to be ... go) t.start() t.join() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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python - Add a legend in a 3D scatterplot with scatter() in Matplotlib

I want to create a 3D scatterplot with different datasets in the same plot and a legend with their labels. The ... what am I 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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353 views

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python - Pandas: groupby forward fill with datetime index

I have a dataset that has two columns: company, and value. It has a datetime index, which contains duplicates ... is this performed in 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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python - Pandas: Counting unique values in a dataframe

We have a DataFrame that looks like this: > df.ix[:2,:10] 0 1 2 3 4 5 6 7 8 9 10 0 NaN NaN NaN ... that still doesn't get us to the finish line. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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351 views

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python - How do I stream a file using werkzeug?

I want to stream a big file via werkzeug. Currently my wsgi application looks like this: from werkzeug.wrappers ... by the wrap_file function. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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860 views

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python - Run while loop concurrently with Flask server

I'm updating some LEDs using python. I've been doing this like so: from LEDs import * myLEDs = LEDs() done ... app if it doesn't seem feasible. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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301 views

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python - In TensorFlow 2.0 with eager-execution, how to compute the gradients of a network output wrt a specific layer?

I have a network made with InceptionNet, and for an input sample bx, I want to compute the gradients of the ... way to compute these gradients. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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