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python dataframe pandas drop column using int
I understand that to drop a column you use df.drop('column name', axis=1). Is there a way to drop a column using a numerical index instead of the column name?
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Python argparse: default value or specified value
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Get object by id()? [duplicate]
Let's say I have an id of a Python object, which I retrieved by doing id(thing) . How do I find thing again by the id number I was given?
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Trying to mock datetime.date.today(), but not working
...attributes of built-in/extension type 'datetime.date'
This fails because Python built-in types are immutable - see this answer for more details.
In this case, I would subclass datetime.date myself and create the right function:
import datetime
class NewDate(datetime.date):
@classmethod
d...
Extract first item of each sublist
...[1,2,3],[11,12,13],[21,22,23]]
>>> zip(*lst)[0]
(1, 11, 21)
Or, Python 3 where zip does not produce a list:
>>> list(zip(*lst))[0]
(1, 11, 21)
Or,
>>> next(zip(*lst))
(1, 11, 21)
Or, (my favorite) use numpy:
>>> import numpy as np
>>> a=np.array...
How to delete last item in list?
...d. (as stated by @pltrdy in the comments)
Note 2: The code could use some Python idioms. I highly recommend reading this:
Code Like a Pythonista: Idiomatic Python (via wayback machine archive).
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OOP vs Functional Programming vs Procedural [closed]
...y better off with that. For a small web application, there are some great Python, PHP, and Ruby frameworks that'll get you off and running very quickly. Java is a great choice for larger projects because of the compile-time checking and enterprise libraries and platforms.
It used to be the case t...
How do I pass variables and data from PHP to JavaScript?
...nswered Jul 18 '14 at 22:00
Jessé CatrinckJessé Catrinck
1,6311414 silver badges2020 bronze badges
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Does Go have “if x in” construct similar to Python?
... (probably about as slow as if you wrote it out in a dynamic language like Python). Other than that, no. That's what people mean when they say that Go doesn't have generics.
– andybalholm
May 13 '15 at 15:44
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“/usr/bin/ld: cannot find -lz”
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Also helped me install/build lxml-3.4.0 for Python via pip on Ubuntu 14.04 LTS/trusty. Thanks!
– Marian
Sep 15 '14 at 8:07
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