Question: merging two python dictionaries
gravatar for t86dan
27 days ago by
t86dan10 wrote:

I have two dictionaries with same keys but different values and I want to concatenate the values into a single dictionary like this:


dict_1 = {0: 0.001469768840129216, 1: 0.004734336468720571, 2: -0.005826401939721929, 3: -0.02846783060538032, 4: 0.008589455025104595, 5: -0.0005503362650310596}

dict_2 = {0: 0.355343768840129216, 1: 0.678679878468720571, 2: -0.045776401939778954, 3: -0.67476463060538032, 4: 0.646746674675123533, 5: -0.3562346762650313643}

I want the output to look something like this


dict_3 = {0: array([0.001469768840129216, 0.355343768840129216]), 1: array([0.004734336468720571, 0.678679878468720571]), 2: array([-0.005826401939721929,  -0.045776401939778954]), 3: array([-0.02846783060538032, -0.67476463060538032]), 4: array([0.008589455025104595,  0.646746674675123533]), 5: array([-0.0005503362650310596,  -0.3562346762650313643])}
software error • 133 views
ADD COMMENTlink modified 27 days ago by goodez460 • written 27 days ago by t86dan10


Please edit your post and explain how this is related to bioinformatics and what you've tried by yourself to solve the problem. If it is not related to bioinformatics, please search/ask Stack Overflow.

ADD REPLYlink written 27 days ago by RamRS22k

Please use the formatting bar (especially the code option) to present your post better. You can use backticks for inline code (`text` becomes text), or select a chunk of text and use the highlighted button to format it as a code block. I've done it for you this time.

ADD REPLYlink written 27 days ago by RamRS22k
gravatar for goodez
27 days ago by
United States
goodez460 wrote:

Since they have the same keys, this would work:

for i in dict_1:
    dict_3[i]=[dict_1[i], dict_2[i]]
ADD COMMENTlink modified 27 days ago • written 27 days ago by goodez460

If it's just a loop you need, why not

d3 = [ d1[i], d2[i] ] for i in 1:d1.length() #not sure if dict.length() is a thing in python

or something like that? I'm pretty sure there are more functions that could do this, but comprehensions are more python-y than loops, no?

ADD REPLYlink modified 27 days ago • written 27 days ago by RamRS22k

I use loops all the time in python. I just find comprehensions harder to read personally. In any case, I know mine works.

As an aside, when I start worrying about being "pythonic", I don't even want to code anymore. Like why can't I just write something that works and is clear?

ADD REPLYlink written 27 days ago by goodez460

Whatever works for you, my friend. Programming languages give you the freedom to implement problem solving logic the way you see fit, so there is no "correct answer" as such. My thought process is: given that OP wants to use Python exclusively, why not go all in on how Python-y the solution is?

I am not a Python programmer, but I don't think comprehensions are challenging to read (to a certain limit). There are people that write comprehensions so crazy that the line starts looking like Perl, but the example above is fairly basic, I think.

ADD REPLYlink written 27 days ago by RamRS22k
Please log in to add an answer.


Use of this site constitutes acceptance of our User Agreement and Privacy Policy.
Powered by Biostar version 2.3.0
Traffic: 862 users visited in the last hour