I want to save 2 figures created at different parts of a script into a PDF using PdfPages, is it possible to append them to the pdf? Example: Answer Sorry, that’s a lame question. We just shouldn’t use the with statement.
Tag: python
Inline for loop
I’m trying to learn neat pythonic ways of doing things, and was wondering why my for loop cannot be refactored this way: I tried replacing the for loop with: But it doesn’t work. The for v in vm: loop evicts numbers from vm based on when they come next in q. Answer What you are using is called a l…
How to loop over grouped Pandas dataframe?
DataFrame: Code: I’m trying to just loop over the aggregated data, but I get the error: ValueError: too many values to unpack @EdChum, here’s the expected output: The output is not the problem, I wish to loop over every group. Answer df.groupby(‘l_customer_id_i’).agg(lambda x: ‘,…
Installing Hiredis with pip on windows machine
I´ve been trying to install Hiredis in my virtual environment. I developing in windows 7. At first i got the vcvarsall.bat error (or something like that). I read a lot of blogs and suggestions to this problem but i found no suitable answer. I tried “Windows GCC (MinGW) binaries for Python developersR…
What am doing wrong in this piece of fibonacci code in python docs vs my re implementation?
Python docs: My reimplementation: Answer The difference between and is that in the second one, a is assigned value of b, and then b is assigned the sum of a and b, which means it is twice its original value. Consider: This gives Contrarily: which gives:
How do you represent missing data in a Pandas DataFrame?
Does Pandas have an equivalent of R’s na (meaning not available)? If not, what is the convention for representing a missing value, as opposed to NaN which represents a mathematically impossible value such as a divide by zero? Answer Currently there is no NA value available in Pandas or NumPy. From the s…
Make division by zero equal to zero
How can I ignore ZeroDivisionError and make n / 0 == 0? Answer Check if the denominator is zero before dividing. This avoids the overhead of catching the exception, which may be more efficient if you expect to be dividing by zero a lot.
Python: Random System time seed
In python, and assuming I’m on a system which has a random seed generator, how do I get random.seed() to use system time instead? (As if /dev/urandom did not exist) Answer
How to run Debug server for Django project in PyCharm Community Edition?
Has anyone had issues setting up a debug configuration for Django project in PyCharm Community Edition? Community Edition of the IDE is lacking the project type option on project setup and then when I am setting up Debug or Run config it asks me for a script it should run. What script would it be for Django, …
Python: Matplotlib avoid plotting gaps
I am currently generating the plot below: with this code: where intra.to_pydatetime() is a: <bound method DatetimeIndex.to_pydatetime of <class ‘pandas.tseries.index.DatetimeIndex’> [2011-01-03 09:35:00, …, 2011-01-07 16:00:00] Length: 390, Freq: None, Timezone: None> So the date…