Recent questions tagged python

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python - Can I have a dictionary with same-name keys?

I need to have a dictionary which might have same names for some keys and return a list of values when referencing the key in ... [1,2,3,4,5,6] 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: get multiindex level as series

I have a dataframe with multiple levels, eg: idx = pd.MultiIndex.from_product((['foo', 'bar'], [ ... luck searching the stackoverflow archives. 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 - pep8 compliant deep dictionary access

What is the pep8 compliant way to do deep dictionary access? dct = { 'long_key_name_one': { 'long_key_name_two': ... nice and is pep8 compliant? 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 create an ec2 instance using boto3

Is it possible to create an ec2 instance using boto3 in python? Boto3 document is not helping here, and I ... provide some sample codes/links. 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 - Triple-double quote v.s. Double quote

What is the preferred way to write Python doc string? """ or " In the book Dive Into Python, the ... there any difference other than 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 - Adding row/column headers to NumPy arrays

I have a NumPy ndarray to which I would like to add row/column headers. The data is actually 7x12x12, but I ... zeros as the strings I 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 - How to run gunicorn from a folder that is not the django project folder

I git cloned a project in my home folder, let's call it /home/telessaude. So the project root is located ... m not using a virtual enviromnment. 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 - BeautifulSoup: How do I extract all the <li>s from a list of <ul>s that contains some nested <ul>s?

My source code looks like: <h3>Header3 (Start here)</h3> <ul> <li>List items</li> <li>Etc...</li> </ul> ... on 30(2004) 1408(2007) ... 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 - Why use pandas.assign rather than simply initialize new column?

I just discovered the assign method for pandas dataframes, and it looks nice and very similar to dplyr's mutate in ... in favour of df.assign? See Question&Answers more detail:os...

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

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269 views

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python - How can you turn an index array into a mask array in Numpy?

Is it possible to convert an array of indices to an array of ones and zeros, given the range? i.e. [2,3] -> ... ) # predicts with 0~199, 300~499 See Question&Answers more detail:os...

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

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280 views

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python - Unit-testing with dependencies between tests

How do you do unit testing when you have some general unit tests more sophisticated tests checking edge cases, depending ... () { ... } 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 - sklearn doesn't have attribute 'datasets'

I have started using sckikit-learn for my work. So I was going through the tutorial which gives standard ... between the two approaches? See Question&Answers more detail:os...

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

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398 views

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python - Change Matplotlib's default font

I'm trying to change matplotlib's default font to Helvetica Neue. On my Mac with EPD/Canopy everything ... , self.defaultFamily[fontext])) See Question&Answers more detail:os...

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

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288 views

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python - Return max of zero or value for a pandas DataFrame column

I want to replace negative values in a pandas DataFrame column with zero. Is there a more concise way to construct this ... 'value'] < 0] = 0 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: command 'gcc' failed with exit status when installing psycopg2

I need to install psycopg2 for openerp installation process, but I always faced that error. I've already used pip ... failed with exit status 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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378 views

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python - Openpyxl setting number format

Could please someone show an example of applying the number format to the cell. For example, I need ... any other formatting settings. See Question&Answers more detail:os...

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

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177 views

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python 2.7 - Django error <model> object has no attribute 'update'

UPDATE I was doing some maintenance on the server and rebooted... once it came back the code worked just ... bug on mod_wsgi. Thanks anyway! See Question&Answers more detail:os...

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

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504 views

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python - How to multiply a scalar throughout a specific column within a NumPy array?

I need to do some analysis on a large dataset from a hydrolgeology field work. I am using NumPy. I want to ... column and not the whole array. See Question&Answers more detail:os...

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

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345 views

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python - Slice notation in Scala?

Is there something similar to the slice notation in Python in Scala? I think this is really a useful ... be incorporated in all languages. 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 - Request returns bytes and I'm failing to decode them

Essentially I made a request to a website and got a byte response back: b'[{"geonameId:"703448"}..... ... without getting back an empty string? See Question&Answers more detail:os...

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

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538 views

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python json load set encoding to utf-8

I have this code: keys_file = open("keys.json") keys = keys_file.read().encode('utf-8') keys_json = json.loads(keys ... Bosch']}] what do I do? See Question&Answers more detail:os...

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

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643 views

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python - Turn off a warning in sqlalchemy

I'm using sqlalchemy with reflection, a couple of partial indices in my DB make it dump warnings like this: SAWarning ... how to turn this off? 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 equivalent of functools 'partial' for a class / constructor

I want to create a class that behaves like collections.defaultdict, without having the usage code specify ... (collections.defaultdict, list) 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 - Pythonic way to check if two dictionaries have the identical set of keys?

For example, let's say I have to dictionaries: d_1 = {'peter': 1, 'adam': 2, 'david': 3} and d_2 = { ... want to make sure if the keys are 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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359 views

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python - Get list of Cache Keys in Django

I'm trying to understand how Django is setting keys for my views. I'm wondering if there's a way to ... Django is setting for my cache_view key See Question&Answers more detail:os...

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

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258 views

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python - Why does right-clicking create an orange dot in the center of the circle?

Why does the first widget example in kivy lead to an orange circle in the middle of the yellow one when you ... '__main__': MyPaintApp().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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440 views

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python - cursor.rowcount always -1 in sqlite3 in python3k

I am trying to get the rowcount of a sqlite3 cursor in my Python3k program, but I am puzzled, as the rowcount ... be nice to discuss. 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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266 views

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python - Django: how to get format date in views?

I need to use SHORT_DATETIME_FORMAT in view. def manage_list(request): user = User.objects.filter().order_by(' ... what the name says.. See Question&Answers more detail:os...

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

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