Recent questions tagged Python

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480 views

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python - Installing functools gives me AttributeError 'module' object has no attribute 'compose'

I installed Ubuntu 12.04 64 bit on a new system, and cannot install functools. I have installed this multiple times ... /home/bobs/.pip/pip.log See Question&Answers more detail:os...

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

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914 views

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python - How to format cell with datetime object of the form 'yyyy-mm-dd hh:mm:ss' in Excel using openpyxl

So, given: dttm = datetime.datetime.strptime("2014-06-23 13:56:30", "%Y-%m-%d %H:%M:%S") ws['A1' ... a typeError (see comment). Any suggestions? See Question&Answers more detail:os...

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

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395 views

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python - Encountered invalid value when I use pearsonr

Maybe I made a mistake. If so, I am sorry to ask this. I want to calculate Pearson's correlation coefficent by ... where do I make a mistake? See Question&Answers more detail:os...

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

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331 views

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python - Django File Upload and Rename

User is uploading a .c file of a particular question. I want the file to be renamed as 'userid_questionid.c' My ... need the file to be renamed. See Question&Answers more detail:os...

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

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171 views

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python - View function did not return a response

I want to send a query to mysql and fetch an array. But however I do it I cannot make it work. Here's my ... a response. 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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312 views

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python - How to calculate length of string in pixels for specific font and size?

If the font, e.g. "Times New Roman", and size, e.g. 12 pt, is known, how can the length of a ... adjust the number spaces to get the alignment. See Question&Answers more detail:os...

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

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128 views

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python - What is the difference between a[:]=b and a=b[:]

a=[1,2,3] b=[4,5,6] c=[] d=[] Whats the difference between these two statements? c[:]=a d ... 6] And is there any difference functionality wise? See Question&Answers more detail:os...

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

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279 views

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python - How to animate 3d plot_surface in matplotlib

I have created a 3D plot surface from a file and I'm trying to animate the plot. I have read the examples in ... =50, blit=False) plt.show() See Question&Answers more detail:os...

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

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216 views

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python - Trying to serve django static files on development server - not found

I've followed the instructions in this question, the documentation, and I've even looked at this one, but so far ... . What am I missing 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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141 views

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python - Google AppEngine: how to count a database's entries beyond 1000?

Duplicate of "how does one get a count of rows in a datastore model in google appengine?" I want to know how ... knowing how many users I have? See Question&Answers more detail:os...

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

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639 views

1 answer

python - Repeatedly write to STDIN and read STDOUT of a Subprocess without closing it

I am trying to employ a Subprocess in Python for keeping an external script open in a Server-like fashion. The ... closing and re-opening 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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364 views

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python - jupyter notebook import error: no module named 'matplotlib'

I'm an ubuntu 16.4 user and I installed anaconda3 and using both python2 and python3 kernels. >>>jupyter kernelspec ... I didn't uninstall 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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178 views

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python - How can I implement a custom error handler for all HTTP errors in Flask?

In my Flask app, I can easily expand the list of errors handled by a single custom error handler by adding ... that it handles all HTTP errors? See Question&Answers more detail:os...

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

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661 views

1 answer

python - Get Scrapy crawler output/results in script file function

I am using a script file to run a spider within scrapy project and spider is logging the crawler output/ ... possible to get output/results. See Question&Answers more detail:os...

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

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479 views

1 answer

python - Tkinter: is there a way to check checkboxes by default?

I have this piece of code that will create a simple checkbox : from Tkinter import * CheckVar = IntVar() self. ... = App(root) root.mainloop() See Question&Answers more detail:os...

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

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354 views

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python - 'str' does not support the buffer interface Python3 from Python2

Hi have this two funtions in Py2 works fine but it doesn′t works on Py3 def encoding(text, codes): ... does not support the buffer interface See Question&Answers more detail:os...

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

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393 views

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python - ValueError: failed to parse CPython sys.version after using conda command

I'm running into an error that I can't solve despite others having reported the same error. I am ... appreciate some thoughts or advice. See Question&Answers more detail:os...

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

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595 views

1 answer

python - Limit the queryset of entries displayed for a django admin Inline

In django admin, using django 1.2, i'm trying to add a InlineModelAdmin to apply a comment on save when a ... a better way to handle 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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354 views

1 answer

python - Tkinter's overrideredirect prevents certain events in Mac and Linux

I am writing a program in Python with a Tkinter UI. I want to have a small window with no title bar. This ... with Python, but with Tcl/Tk. See Question&Answers more detail:os...

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

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586 views

1 answer

python - How to add data labels to a bar chart in Bokeh?

In the Bokeh guide there are examples of various bar charts that can be created. http://docs.bokeh.org/en/0. ... could not find a clear answer. See Question&Answers more detail:os...

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

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332 views

1 answer

python - setdefault vs defaultdict performance

I am writing code for an application where performance is important. I am wondering why defaultdict seems to be ... improve its speed? 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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301 views

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python - error: [Errno 32] Broken pipe

I am working on a Django project. All went well till I created an Ajax request to send values from the html ... to figure out why this happened. See Question&Answers more detail:os...

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

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264 views

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python - Expected number of hash collisions

I feel like I'm way overthinking this problem, but here goes anyway... I have a hash table with M slots ... run() print float(total)/NUM_ITER See Question&Answers more detail:os...

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

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392 views

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python - Fit multivariate gaussian distribution to a given dataset

I need to fit multivariate gaussian distribution i.e obtain mean vector and covariance matrix of the nearest ... this data in python? See Question&Answers more detail:os...

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

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518 views

1 answer

python - Pandas, loc vs non loc for boolean indexing

All the research I do point to using loc as the way to filter a dataframe by a col(s) value(s), ... come across regarding this subject use loc? See Question&Answers more detail:os...

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

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134 views

1 answer

python - Putting a variable into a string (quote)

Help I can't get this to work, I am trying to put the variable age into the string but it won't ... syntax Process finished with exit code 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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279 views

1 answer

python - Change Cython's naming rules for .so files

I'm using Cython to generate a shared object out of Python module. The compilation output is written to ... version or arch appendix. See Question&Answers more detail:os...

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

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829 views

1 answer

python - Flask SQLAlchemy Foreign Key Relationships

I'm having a lot of trouble getting my head around foreign keys and relationships in SQLAlchemy. I have two ... has no column named 'agent' See Question&Answers more detail:os...

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

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