Python Python: How to get my variables out of a function

[MaxManus]

Homework Statement

The exercise: Make a Python function for computing
g(t) = e**(-a * t**2) and gderiv(t) = -2*a*t*g(t)

Return the function values of g(t) and gderiv(t). Apply the function to write out a result in the format:
g(1, a=0.5)=0.606531, g’(1, a=0.5)=-0.606531 I have made a function g(t, a) and gderiv(t,a), but I don't know how to print t and a so that i can print the result in the format: "g(1, a=0.5)=0.606531, g’(1, a=0.5)=-0.606531"

The Attempt at a Solution

from math import e

def g(t, a):
G = e**(-a*t**2)
Gderiv = -2*a*t*G
return G, Gderiv,

G,Gderiv = g(t = 1, a = 0.5)

print "g(%g, a=%g) = %.6f" % (t, a, G)

Edit: The problem is that t and a are not defined.

 

[gabbagabbahey]

Homework Statement

The exercise: Make a Python function for computing
g(t) = e**(-a * t**2) and gderiv(t) = -2*a*t*g(t)

Return the function values of g(t) and gderiv(t). Apply the function to write out a result in the format:
g(1, a=0.5)=0.606531, g’(1, a=0.5)=-0.606531


I have made a function g(t, a) and gderiv(t,a), but I don't know how to print t and a so that i can print the result in the format: "g(1, a=0.5)=0.606531, g’(1, a=0.5)=-0.606531"

The Attempt at a Solution

from math import e

def g(t, a):
G = e**(-a*t**2)
Gderiv = -2*a*t*G
return G, Gderiv,

G,Gderiv = g(t = 1, a = 0.5)

print "g(%g, a=%g) = %.6f" % (t, a, G)

Edit: The problem is that t and a are not defined.

I've never done any programming in python, but I assume that there is an input function which allows the user of your program to input the values of t and a... I'd try something like this:

from math import e

def g(t, a):
    G = e**(-a*t**2)
    Gderiv = -2*a*t*G
    return G, Gderiv

t=input("Please input value of t   ")  
a=input("Please input value of a   ")

G,Gderiv = g(t , a ) 

print "g(%g, a=%g) =  %.6f" % (t, a, G)
print "g'(%g, a=%g) =  %.6f" % (t, a, Gderiv)

And then when you run the program you input the values of t and a when prompted.

 

[MaxManus]

Thank you