"""
lectureNote/chapters/chapt05/codes/debugging1.py

Originally from
http://faculty.washington.edu/rjl/classes/am583s2014/notes/python_debugging.html

Debugging demo using print statements

"""

x = 3.5
y = -22.231

def f(z):
    global y
    x = z + 10
    y = 20.19
    print("+++ in function f: x = %s, y = %s, z = %s, tt=%s" % (x,y,z,'i love am129/209')) # %s also works for numbers
    # print("+++ in function f: x = %f, y = %f, z = %f, tt=%s" % (x,y,z,'i love am129/209')) # but in general, %f also works for all numbers
    return x

print("+++ before calling f: x = %s, y = %s" % (x,y))
y1 = f(x)
print("+++ after calling f: x = %s, y = %s, y1= %s" % (x,y,y1))