Merge branch 'master' of https://github.com/csc-training/hpc-python

Author: jussienko

numpy/input-output/README.md

@@ -0,0 +1,5 @@
+## Input and output
+
+File [xy-coordinates.dat](xy-coordinates.dat) contains a list of (x,y) value
+pairs. Read the data with `numpy.loadtxt()`. Add then 2.5 to all y values and
+write the new data into a file using `numpy.savetxt()`.

numpy/input-output/solution/input-output.py

@@ -4,4 +4,4 @@
 filename = sys.argv[1]
 xy = np.loadtxt(filename)
 xy[:,1] += 2.5
-np.savetxt('new_' + filename, xy, fmt='%.6f', header='modified data')
+np.savetxt('new-' + filename, xy, fmt='%.6f', header='modified data')

numpy/input-output/solution/xy-coordinates.dat

@@ -0,0 +1 @@
+../xy-coordinates.dat