Converting array to string in Python

Question

I used numpy to do this. I have a text file containing a series of numbers:

[  11.1   44.0   74.9  103.8  115.8
  157.0   170.1  208.4   239.9  296.8]

How do I convert the text file to:

11.10377777 44.03133786 74.9749492 103.83874619 115.83058441 157.0862515 170.10200524 208.4376871 239.90138829 296.86073327

stim = a[0,61:71] 
stim2 = a[0,21]
fname = 'blah'
f_events = open('L:\\directory\\' + blah + '.txt',"w")
f_events.write(str(stim-stim2))
f_events.close()

Also, there are three spaces between each number, but I want it to be 1 space. — user1636354
– user1636354, Commented Sep 10, 2012 at 17:45

Joran Beasley · Accepted Answer · 2012-09-10 17:54:07Z

3

use " ".join ... but you need to map your floats to string inside the join

with open('L:\\directory\\' + blah + '.txt',"w" ) as f_events:
    f_events.write(" ".join(map(str,stim-stim2)))  #this line :)

edited Sep 10, 2012 at 17:54

answered Sep 10, 2012 at 17:48

Joran Beasley

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3 Comments

Dr. Jan-Philip Gehrcke Over a year ago

Would you mind editing your solution so that it uses with open(...) as f: instead of the explicit .close()?

Bakuriu Over a year ago

I'd add that if you want some more customization(e.g. print only first x decimal places), you can use string formatting to get the desired result. Even though this doesn't seem required by the OP.

Joran Beasley Over a year ago

there used with instead (better form... but unrelated to OP)

seberg · Accepted Answer · 2012-09-10 20:50:30Z

0

Since you are using numpy, just use np.savetxt, really should first check what the packages you use provide...

answered Sep 10, 2012 at 20:50

seberg

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