asked on

What is the shell command and what is the other program professor is commenting/uncommenting

This is a screenshot of the professor on a mac showing program-that-displays-locals-and-globals-for-each-function-on-one-screen

I have seen ide debuggers that will display current scope local and all global
but not all the variables of each local scope
And this is screenshot of me on windows selecting shell stack (but no output is generated).

how do I get to this screen, what other program/app do I open and what do I type in shell?
This is the code instructor uncomments in groups (many different code samples are here.
And then this is run in shell (I do not know shell command)

So my question is
What is the shell command and what is the other program professor is commenting/uncommenting blocks of this code:

##x = 0.5
##epsilon = 0.01
##low = 0.0
##high = x
##ans = (high + low)/2.0
##while abs(ans**2 - x) >= epsilon and ans <= x:
##    print 'ans =', ans, 'low =', low, 'high =', high
##    if ans**2 < x:
##        low = ans
##    else:
##        high = ans
##    ans = (high + low)/2.0
##print ans, 'is close to square root of', x

##def withinEpsilon(x, y, epsilon):
##    """x,y,epsilon ints or floats.  epsilon > 0.0
##       returns True if x is within epsilon of y"""
##    return abs(x - y) <= epsilon

##print withinEpsilon(2,3,1)
##val = withinEpsilon(2,3,0.5)
##print val

##def f(x):
##   x = x + 1
##   print 'x =', x
##   return x
##
##x = 3
##z = f(x)
##print 'z =', z
##print 'x =', x

##def f1(x):
##   def g():
##       x = 'abc'
##   x = x + 1
##   print 'x =', x
##   g()
##   assert False
##   return x

##x = 3
##z = f1(x)

##def isEven(i):
##    """assumes i a positive int
##       returns True if i is even, otherwise False"""
##    return i%2 == 0

##def findRoot(pwr, val, epsilon):
##    """assumes pwr an int; val, epsilon floats
##       pwr and epsilon > 0
##       if it exists,
##          returns a value within epsilon of val**pwr
##          otherwise returns None"""
##    assert type(pwr) == int and type(val) == float\
##           and type(epsilon) == float
##    assert pwr > 0 and epsilon > 0
##    if isEven(pwr) and val < 0:
##          return None
##    low = -abs(val)
##    high = max(abs(val), 1.0)
##    ans = (high + low)/2.0
##    while not withinEpsilon(ans**pwr, val, epsilon):
##        #print 'ans =', ans, 'low =', low, 'high =', high
##        if ans**pwr < val:
##           low = ans
##        else:
##           high = ans
##        ans = (high + low)/2.0
##    return ans

##def testFindRoot():
##    """x float, epsilon float, pwr positive int"""
##    for x in (-1.0, 1.0, 3456.0):
##        for pwr in (1, 2, 3):
##            ans = findRoot(pwr, x, 0.001)
##            if ans == None:
##                print 'The answer is imaginary'
##            else:
##                print ans, 'to the power', pwr,\
##                'is close to', x 

#testFindRoot()

##sumDigits = 0
##for c in str(1952):
##    sumDigits += int(c)
##print sumDigits

##x = 100
##divisors = ()
##for i in range(1, x):
##    if x%i == 0:
##        divisors = divisors + (i,)
##
##print divisors
##print divisors[0] + divisors[1]
##print divisors[2:4]