Recent questions tagged Python

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python - Function closure vs. callable class

In many cases, there are two implementation choices: a closure and a callable class. For example, class F: def ... ? What else could be added? 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 - PyMySQL returning old/snapshot values/not rerunning query?

I'm using pymysql.cursors and a simplified code example that loads a row from a table and prints it every second ... bit and it just looks odd. 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 - unable to install pyspark

I am trying to install pyspark as this: python setup.py install I get this error: Could not import pypandoc - ... how can I install pyspark? 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 3.x - Eclipse pydev warning - "Debugger speedups using cython not found."

I get this warning while running a python program (some basic web automation using selenium): warning: Debugger ... I address this issue? 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 custom for complex Func (sql function)

In the process of finding a solution for Django ORM order by exact, I created a custom django Func: from django ... you can test any solution. See Question&Answers more detail:os...

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

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298 views

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python - No module named backends.default.urls

So I've installed django-registration through easy_install. I'm following a quick start guide and I'm trying to ... .backends.default.urls')), 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 - Poetry and PyTorch

I've recently found poetry to help out with all of the different dependencies for our group. In one project we ... would appreciate any help. :) 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: plot multiple time series DataFrame into a single plot

I have the following pandas DataFrame: time Group blocks 0 1 A 4 1 2 A 7 2 3 A 12 3 4 A 17 4 5 A 21 ... all in one series. How do 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 - Installing guppy with pip3 issues

I am trying to install guppy. My program uses python3 so I must use pip3 exclusively. When I run: pip3 install ... a way to resolve this issue? 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 imaging library - Error in images2gif.py with GlobalPalette

Getting an error when trying to convert sequence of jpgs to gifs. Can't seem to figure out how to add a palette, ... if that's the issue. help? See Question&Answers more detail:os...

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

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357 views

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python - Best way to install pygame on OS X Lion?

I tried to install pygame via pip but this fails. Based on my google searches, it sounds like easy_install ... Suggestions? Appreciate the help. See Question&Answers more detail:os...

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

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443 views

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python - Django ListView customising queryset

Hopefully this should be a simple one to help me with. I have a page with a dropdown menu containing three ... displayed on the other two sets. See Question&Answers more detail:os...

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

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270 views

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python - Length of each string in a NumPy array

Is there any builtin operation in NumPy that returns the length of each string in an array? I don't think any of the ... sizes) [5, 3, 3, 10] See Question&Answers more detail:os...

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

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291 views

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python - What is the correct ways to write Boto3 filters to use customise tag name?

I am trying to list the instances on tag values of different tag keys For eg> one tag key - Environment, other tag ... 'list'>, <type 'tuple'> See Question&Answers more detail:os...

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

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306 views

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python - Why is the 'running' of .pyc files not faster compared to .py files?

I know the difference between a .py and a .pyc file. My question is not about how, but about why According ... execution compared to .py files? See Question&Answers more detail:os...

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

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300 views

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python - What is the difference between <class 'str'> and <type 'str'>

I am new to python. I'm confused by the <class 'str'>. I got a str by using: response = urllib.request.urlopen ... that I can use in 'for loop'. See Question&Answers more detail:os...

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

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428 views

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python - Cartesian product of large iterators (itertools)

From a previous question I learned something interesting. If Python's itertools.product is fed a series of ... backend of itertools!). See Question&Answers more detail:os...

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

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247 views

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python - How to capture print output of another module?

I was wondering if this is possible in python: # module1 def test(): print('hey') # module2 import module1 ... from running module1 as a script? See Question&Answers more detail:os...

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

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505 views

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python - django app in heroku getting worker timeout error

I have deployed a django app and deployed to Heroku it takes facebook account id's as input through CSV file ... Booting worker with pid: 30 See Question&Answers more detail:os...

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

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303 views

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python - OSError: dlopen(libSystem.dylib, 6): image not found

Just updated my Mac to El Capitan 10.11. I am trying to run Django 1.6 with Celery 3.1 and I'm getting ... Anyone has had a problem like 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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644 views

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python - pandas: drop duplicates in groupby 'date'

In the dataframe below, I would like to eliminate the duplicate cid values so the output from df.groupby( ... has no attribute 'drop_duplicates' See Question&Answers more detail:os...

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

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307 views

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python - Force Return of "View" rather than copy in Pandas?

When selecting data from a Pandas dataframe, sometimes a view is returned and sometimes a copy is returned. While there ... a view or a copy? See Question&Answers more detail:os...

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

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237 views

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python - How to find the number of nested lists in a list?

The function takes a list and returns an int depending on how many lists are in the list not including the list ... 1 return(count_list(a[i])) See Question&Answers more detail:os...

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

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357 views

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python - Paging output from print statement

I'm essentially trying to achieve this: >>>print "SOME_VERY_LONG_TEXT" | more Of course, it doesn't ... pydoc.pager("SOME_VERY_LONG_TEXT") See Question&Answers more detail:os...

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

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480 views

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python - How to horizontally center a widget using grid()?

I am using grid() to place widgets in a tkinter window. I am trying to put a label on the horizontal center ... like to keep using grid(). 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 - How can I splice a string?

I know I can slice a string in Python by using array notation: str[1:6], but how do I splice it? i ... string, possibly of a different length? See Question&Answers more detail:os...

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

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633 views

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python - Numpy: convert an array to a triangular matrix

I was looking for a built in method to convert an linear array to triangular matrix. As I failed in find ... triangular matrix from 1-D 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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526 views

1 answer

python - PySerial: How to send Ctrl-C command on the serial line

I'm automating a configuration process for an embedded board. To enter the setup screen I need to send "Ctrl-C" ... I need to send? 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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