Question

How can I "convert" this:

input=[(0.25  , 'x1'),(0.20 , 'x2'), ............................]

so that I can write in test.txt only this:
x1=0.25, x2=0.20, x3= ………………

f = open(‘test.txt’, ‘w’)

f.write(input)

f.close()

I know for print, this work ok:

 print ' '.join("%s=%s" % (y, x) for x,y in input)

but I can’t "import" into f.write(…)

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Edit: Thanks to all, all worked, I didn’t remember that I can use:

f.write(' '.join("%s=%s" % (y, x) for x,y in input))

Answer 1

You have ' '.join("%s=%s" % (y, x) for x,y in input) and you are printing that; pass that to f.write, it’s a perfectly valid expression:

f = open('text.txt', 'w')
f.write(' '.join("%s=%s" % (y, x) for x,y in input))
f.close()