how to read in an array in text file?

[Yun Mao]

Hi, what's the easy way of reading in a two-dimentional array from a text
file?
The text file looks like this:
0.1 1.1 2.3 12.1
0.3 33.0 4.1 1.1

I'm using Numeric Python now. Other solutions are also welcome. Thanks a
lot!
Yun

[Ulrich Petri]

"Yun Mao" <ma**@cis.upenn.edu> schrieb im Newsbeitrag
news:bo***********@netnews.upenn.edu...

Hi, what's the easy way of reading in a two-dimentional array from a text
file?
The text file looks like this:
0.1 1.1 2.3 12.1
0.3 33.0 4.1 1.1

I'm using Numeric Python now. Other solutions are also welcome. Thanks a
lot!
Yun

f = file("myfile", "r")
data = [line.split() for line in f]
f.close()

HTH

Ciao Ulrich

[Bengt Richter]

On Sun, 9 Nov 2003 12:17:39 +0100, "Ulrich Petri" <ul***@gmx.de> wrote:

"Yun Mao" <ma**@cis.upenn.edu> schrieb im Newsbeitrag
news:bo***********@netnews.upenn.edu...

Hi, what's the easy way of reading in a two-dimentional array from a text
file?
The text file looks like this:
0.1 1.1 2.3 12.1
0.3 33.0 4.1 1.1

I'm using Numeric Python now. Other solutions are also welcome. Thanks a
lot!
Yun
f = file("myfile", "r")
data = [line.split() for line in f]

# or (untested), to get floats when you access data[row][col]
data = [map(float,line.split()) for line in f]
f.close()

Hate to leave that "(untested)" ... so, simulating the file with StringIO...

from StringIO import StringIO
f = StringIO("""\ ... 0.1 1.1 2.3 12.1
... 0.3 33.0 4.1 1.1
... """) data = [map(float,line.split()) for line in f]
data [[0.10000000000000001, 1.1000000000000001, 2.2999999999999998, 12.1], [0.29999999999999999, 33.0
, 4.0999999999999996, 1.1000000000000001]]
for row in data:

... for colitem in row: print '%10.3f' %colitem,
... print
...
0.100 1.100 2.300 12.100
0.300 33.000 4.100 1.100

Regards,
Bengt Richter