Dump a Python dictionary with array value inside to CSV -

i got this:

dict = {} dict["p1"] = [.1,.2,.3,.4] dict["p2"] = [.4,.3,.2,.1] dict["p3"] = [.5,.6,.7,.8]  

how can dump dictionary csv structure? :

.1 .4 .5 .2 .3 .6 .3 .2 .7 .4 .1 .8 

really appreciated !

dicts have no order need ordereddict , transpose values:

import csv collections import ordereddict d = ordereddict() d["p1"] = [.1,.2,.3,.4] d["p2"] = [.4,.3,.2,.1] d["p3"] = [.5,.6,.7,.8]  open("out.csv","w") f:     wr = csv.writer(f)     wr.writerow(list(d))     wr.writerows(zip(*d.values())) 

output:

p1,p2,p3 0.1,0.4,0.5 0.2,0.3,0.6 0.3,0.2,0.7 0.4,0.1,0.8 

also best avoid shadowing builtin functions names dict.