Unlist a complex python list

Question

I have a list as:

mylist = [['469536.18999', '6334694.44001', '-9999.0'], '-9999.0', '-9999.0', '-9999.0', '-9999.0']

i wish to unlist as:

['469536.18999', '6334694.44001', '-9999.0', '-9999.0', '-9999.0', '-9999.0', '-9999.0']

i used different approaches but always i got the wrong result:

from itertools import chain
print list(chain.from_iterable(mylist))
['469536.18999', '6334694.44001', '-9999.0', '-', '9', '9', '9', '9', '.', '0', '-', '9', '9', '9', '9', '.', '0', '-', '9', '9', '9', '9', '.', '0', '-', '9', '9', '9', '9', '.', '0']

sum(mylist, [])
Traceback (most recent call last):
  File "<input>", line 1, in <module>
TypeError: can only concatenate list (not "str") to list

score 1 · Accepted Answer · answered Jan 07 '15 at 04:50

Try this code

c=[['469536.18999', '6334694.44001', '-9999.0'], '-9999.0', '-9999.0', '-9999.0', '-9999.0']

x=[]
for i in range(len(c)):
    if 'list' in str(type(c[i])):
        for j in range(len(c[i])):
            x.append(c[i][j])
    else :
        x.append(c[i])
print x

Output: ['469536.18999', '6334694.44001', '-9999.0', '-9999.0', '-9999.0', '-9999.0', '-9999.0']

Unlist a complex python list

1 Answers1