Data commit

Task/Write-float-arrays-to-a-text-file/Python/write-float-arrays-to-a-text-file-1.py

@@ -0,0 +1,5 @@
+import itertools
+def writedat(filename, x, y, xprecision=3, yprecision=5):
+    with open(filename,'w') as f:
+        for a, b in itertools.izip(x, y):
+            print >> f, "%.*g\t%.*g" % (xprecision, a, yprecision, b)

Task/Write-float-arrays-to-a-text-file/Python/write-float-arrays-to-a-text-file-2.py

@@ -0,0 +1,15 @@
+>>> import math
+>>> x = [1, 2, 3, 1e11]
+>>> y = map(math.sqrt, x)
+>>> y
+[1.0, 1.4142135623730951, 1.7320508075688772, 316227.76601683791]
+>>> writedat("sqrt.dat", x, y)
+>>> # check
+...
+>>> for line in open('sqrt.dat'):
+...   print line,
+...
+1       1
+2       1.4142
+3       1.7321
+1e+011  3.1623e+005

Task/Write-float-arrays-to-a-text-file/Python/write-float-arrays-to-a-text-file-3.py

@@ -0,0 +1,6 @@
+def writedat(filename, x, y, xprecision=3, yprecision=5):
+    with open(filename,'w') as f:
+        for a, b in zip(x, y):
+            print("%.*g\t%.*g" % (xprecision, a, yprecision, b), file=f)
+            #or, using the new-style formatting:
+            #print("{1:.{0}g}\t{3:.{2}g}".format(xprecision, a, yprecision, b), file=f)