Recent questions tagged Python

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python - Apache Spark throws NullPointerException when encountering missing feature

I have a bizarre issue with PySpark when indexing column of strings in features. Here is my tmp.csv file: x0,x1 ... and the result is the same. 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 clean up temporary file used with send_file?

I'm currently developing a server side json interface where several temporary files are manipulating during ... in temporary directories. 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 - Dict/Set Parsing Order Consistency

Containers that take hashable objects (such as dict keys or set items). As such, a dictionary can only ... constructing dict or set objects. 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 - SyntaxError: cannot assign to operator

def RandomString (length,distribution): string = "" for t in distribution: ((t[1])/length) * t[1] += ... length of the string that you want. 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 - heatmap-like plot, but for categorical variables in seaborn

Same question as heatmap-like plot, but for categorical variables but using python and seaborn instead of R: ... the seaborn issue tracker. 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 plot a rectangle on a datetime axis using matplotlib?

I tried to plot a rectangle on a graph with a datetime x-axis using the following code: from datetime import ... matplotlib version 1.0.1) 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 install graphviz-2.38 on windows 10

I know this is basic, but I'm pretty stuck. I've never installed python packages on Windows OS before... only Linux. ... , so I'm a little lost. 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: StringIO instance has no attribute 'fileno'

def captureOutput(self, func, *args, **kwargs): pass sys.stdout.flush() sys.stderr.flush() (outfd, fn) = ... error and how can I correct it? 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 - PyTorch : How to properly create a list of nn.Linear()

I have created a class that has nn.Module as subclass. In my class, I have to create N number of linear ... separately. Thank you in advance, M 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 - Why is reading multiple files at the same time slower than reading sequentially?

I am trying to parse many files found in a directory, however using multiprocessing slows my program. # Calling my ... here ? Thanks in advance! 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 can I type-hint a function where the return type depends on the input type of an argument?

Assume that I have a function which converts Python data-types to Postgres data-types like this: def map_type( ... the concrete instance type. 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 - Adding two tuples elementwise

I was just wondering if there was an especially pythonic way of adding two tuples elementwise? So far (a and b ... how I would do that. 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 - TensorFlow: AttributeError: 'Tensor' object has no attribute 'shape'

I have the following code which uses TensorFlow. After I reshape a list, it says AttributeError: 'Tensor' object has ... me what I am missing? 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 can I have a Django signal call a model method?

Maybe it's just late, but I cannot figure out why this isn't working. When I have a post_save signal call a ... my head into the wall? 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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456 views

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python - In matplotlib, how do you draw R-style axis ticks that point outward from the axes?

Because they are drawn inside the plot area, axis ticks are obscured by the data in many matplotlib plots. A ... -around for the minor ticks? 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 - ImportError: cannot import name inplace_column_scale

Using Python 2.7 with scikit-learn 0.14 package. It runs well on some examples from the user ... import name inplace_column_scale 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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python - Patch __call__ of a function

I need to patch current datetime in tests. I am using this solution: def _utcnow(): return datetime.datetime. ... How to do this elegantly? See Question&Answers more detail:os...

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

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388 views

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python - Keeping columns in the specified order when using UseCols in Pandas Read_CSV

I have a csv file with 50 columns of data. I am using Pandas read_csv function to pull in a subset of ... Any help would be much appreciated! 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 - matplotlib simple and two head arrows

I would like to make a simple arrow and a two head arrow. I used the following to make a simple arrow, ... two head arrows with this method. See Question&Answers more detail:os...

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

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424 views

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python - Print an integer array as hexadecimal numbers

I have an array created by using array1 = np.array([[25, 160, 154, 233], [61, 244, 198, 248], [227, ... just to give example of what I need. 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 - ValueError: Invalid RGBA argument: What is causing this error?

I am trying to create a 3D colored bar chart using ideas from: this stackoverflow post. First I create ... stackoverflow post becomes obsolete? 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 - ImportError: cannot import name '_ccallback_c'

Initially I was getting this error (No Module name was found scipy) So I installed a Scipy ... sklearn.linear_model import LinearRegression 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 - 'Tensor' object has no attribute 'lower'

I am fine-tuning a MobileNet with 14 new classes. When I add new layers by: x=mobile.layers[-6].output x= ... model which is x in 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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python - 'module' object has no attribute 'basicConfig'

I have the following code, copied from the Python manual: import logging LOG_FILENAME = 'example.log' logging.basicConfig( ... .6.6. 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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python - Why is OrderedDict named in camel case while defaultdict is lower case?

Looking at the source code, it seems the only "reason" is that OrderedDict is written in Python, while ... <class 'collections.OrderedDict'> See Question&Answers more detail:os...

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

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330 views

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python - pandas convert from datetime to integer timestamp

Considering a pandas dataframe in python having a column named time of type integer, I can convert it to a ... any utility for this conversion? See Question&Answers more detail:os...

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

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144 views

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python - Max recursion is not exactly what sys.getrecursionlimit() claims. How come?

I've made a small function that will actually measure the max recursion limit: def f(x): r = x try: ... than the sys.getrecursionlimit() 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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970 views

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python - Getting an error - AttributeError: 'module' object has no attribute 'run' while running subprocess.run(["ls", "-l"])

I am running on a AIX 6.1 and using Python 2.7. Want to execute following line but getting an error. ... ' object has no attribute '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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