printSoln module problem
- by dingo_d
Hi I found in book:Numerical Methods in engineering with Python the module run_kut5, but for that module I need module printSoln, all provided in the book. Now I cp the code, made necessary line adjustments and so. The code looks like:
# -*- coding: cp1250 -*-
## module printSoln
''' printSoln(X,Y,freq).
Prints X and Y returned from the differential
equation solvers using printput frequency ’freq’.
freq = n prints every nth step.
freq = 0 prints initial and final values only.
'''
def printSoln(X,Y,freq):
def printHead(n):
print "\n x ",
for i in range (n):
print " y[",i,"] ",
print
def printLine(x,y,n):
print "%13.4e"% x,f
for i in range (n):
print "%13.4e"% y[i],
print
m = len(Y)
try: n = len(Y[0])
except TypeError: n = 1
if freq == 0: freq = m
printHead(n)
for i in range(0,m,freq):
printLine(X[i],Y[i],n)
if i != m - 1: printLine(X[m - 1],Y[m - 1],n)
Now, when I run the program it says:
line 24, in <module>
m = len(Y)
NameError: name 'Y' is not defined
But I cp'd from the book :\ So now when I call the run_kut module I get the same error, no Y defined in printSoln...
I'm trying to figure this out but I suck :(
Help, please...
