Recent questions tagged Python

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python - Trying load a pandas dataframe into Flask session and use that throughout the session

I am dealing with a huge dataframe. I would like to avoid pickling in-between user queries. Want to know if ... encryption app.run(debug = True) 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 - Retrieving data from RDS gives AttributeError: 'sqlalchemy.cimmutabledict.immutabledict' object has no attribute 'setdefault'

I would like to retrieve user data from RDS whenever the API endpoint {{url}}/api/users/login is called to ... went wrong while logging in") 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 DataFrame slicing by day/hour/minute

I have pandas Dataframe with datetime index like 'YYYY-MM-DD HH:MM:SS'. Index Parameter 2007-05-02 14:14:08 ... For example, by day or hour? 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 - Trying to import pypyodbc module gives error 'ODBC Library is not found. Is LD_LIBRARY_PATH set?'

I am running Python 3.5 on my Linux Mint 18. I want to load the pypyodbc module. However, no matter ... not found. Is LD_LIBRARY_PATH set?' 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 - MongoDB: how to get db.stats() from API

I'm trying to get results of db.stats() mongo shell command in my python code (for monitoring purposes). But unlike ... 2.1.0, python 2.7 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 - Close a figure - PyCharm

I have spent over an hour searching, just to figure this simple thing. So, before considering this a duplicate ... can I do it PyCharm. 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 - os.path.isdir() returns False even when folder exists

I'm currently writing a script which has to check if all specified folders actually exist. I found out I have to ... know 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 - Passing variables through URL to a flask app

Well i've this in my flask app : @app.route("/changeip/<ip>") def change_ip(ip) : return ip Now if i ... what is that i'm doing wrong here? 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 - Using numpy.array with large number of dimensions

If you try to make an array with large number of dimensions in numpy, it throws an exception: In [1]: ... doesn't allow creating such arrays? 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 - ElasticSearch: EdgeNgrams and Numbers

Any ideas on how EdgeNgram treats numbers? I'm running haystack with an ElasticSearch backend. I created an indexed ... I get nothing. 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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python - Pass a function as a variable with one input fixed

Say I have a two dimensional function f(x,y) and another function G(function) that takes a function as an input. ... the best way to do 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 - Selecting Unique Rows between Two DataFrames in Pandas

I have two data frames A and B of unequal dimensions. I would like to create a data frame C such that it ONLY ... 0.000000 N7789 12.501 11.892 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 - Understanding class type '__main__.ClassName'

Code: class Fraction(object): def __init__(self, num, denom): self.numerator = num self.denominator = denom ... : <class '__main__.Fraction'> 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 - Cannot pass arguments from the tkinter widget.after function

Part of the GUI I'm building using tkinter has a pop-up window that says "Please wait while the program ... mybackup> self.backupCB.destroy() 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: passing numpy array for weight initialization

I'd like to initialize the parameters of RNN with np arrays. In the following example, I want to ... RNN(input_size, hidden_size, num_layers) 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 - Measuring the diameter pictures of holes in metal parts, photographed with telecentric, monochrome camera with opencv

Setup: Camera: Blackfly S Mono 20.0 MP Lens: Opto telecentric lens TC23080 Lights: 16 green LEDS Python: 3.7. ... , param2 or any other values). 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 - What is the default content-type/charset?

According to this answer: urllib2 read to Unicode I have to get the content-type in order to change to Unicode. ... , I can just use that? 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 - Get start date and end date of the week, given week number and year

How do I get the start date and end date of the week, given week number and year in python? I've tried ... week of the year starts with Monday. 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 - jupyter notebook starting directory

I'm trying to set a custom starting directory in Jupyter Notebook. I have edited jupyter_notebook_config.py. ... suggestion about my problem? 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 - sum list of dictionary values

I have a list of dictionary in this form : [ {'signal_8': 1, 'signal_1': 7, 'signal_10': 5, 'signal_5': ... (result) but it still doesn't work. 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 - Understanding treeReduce() in Spark

You can see the implementation here: https://github.com/apache/spark/blob/ffa05c84fe75663fc33f3d954d1cb1e084ab3280/python/ ... achieve that? 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 keras sequential models with same input?

I am trying to create my first ensemble models in keras. I have 3 input values and a single output value in my ... model. How can I do 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 - Django admin: timezone display

So i am making an app where you can find activities which happen at locations. On the django-admin page i want ... s rendered in the admin page? See Question&Answers more detail:os...

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

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983 views

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python 3.x - Is Chrome installation needed or only chromedriver when using Selenium?

I've tried to search, but haven't found a definitive answer. On Windows Server 2016 WITHOUT ... Chrome(chrome_options=self.chrome_options) 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 - os.path.isfile does not work as expected

I am trying to scan my harddrive for jpg and mp3 files. I have written the following script which works if ... 1 os.chdir(d) return filesBySize 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 - Error when checking target: expected dense_3 to have shape (2,) but got array with shape (1,)

I'm training a textual sentiment classification model with multiple output layers in Keras's Functional API(using a ... with shape (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 - Is there any way to tell if a function object was a lambda or a def?

Consider the two functions below: def f1(): return "potato" f2 = lambda: "potato" f2.__name__ = f2.__qualname__ ... >>> black_magic(f2) "lambda" See Question&Answers more detail:os...

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

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1.6k views

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python - Convert datetime to unix timestamp in SQLAlchemy model before executing query?

I am using SQLAlchemy to work with a remote database that uses a strange timestamp format--it stores timestamps as ... How can I do 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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