Python list not printing as desired

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0

I have a list, which is obtained as an output from a separate Python regex part of the code. The list is as follows:

v = [['-0.00162439495203', '-0.000178892778126']]

I am trying to convert this to string and write to a file as

v_new = ','.join(map(str, v))
f.write('%s\n'%v_new)
f.close

However, when I open my file instead of having

-0.00162439495203
-0.000178892778126

I get ['-0.00162439495203', '-0.000178892778126'], that is, including the [] and '' and in the same line. Note the file f is opened for writing else where, which is not shown here.

edited 19 secs ago

asked 5 mins ago

Deepak

31

2 Answers

Vote count:

0

You have a list within a list, which contains a string. If you want to extract the string from that list, simply index it twice:

f.write('{0}'.format(v[0][0]) )

answered 38 secs ago

Andrew

60

Vote count:

0

If you specify the element of v, a string will print without the brackets and quotes. Like so:

v = [['-0.00162439495203']]
v_new = ','.join(map(str, v[0]))

answered just now

Kyle Booth

181

Python list not printing as desired