Disregard ... Operator Error

Python Help
1

Hello,

I am currently going over the subject of measuring timing processing times.

A new module that I have been introduced to is the timer module. I noticed that by
importing it, it automatically prints the following onto the IDLE shell interpreter. Is this a
bug. I noticed that the book did not show this as being printed for an example incorporating
the module.

You can try the following (this should suffice) into a module and run it:

import timer

What is printed onto the shell interpreter is:

t =  0.0018258999989484437
d =  (0.00020050000603077933, 'SPAM')
b =  (9.999348549172282e-08, 'SPAM')
c =  0.003384900002856739

This would be a bit annoying if this would print out every time that you would import the module.

2

I’m not seeing that.

Print out timer.__file__ to see where that file is located. Is it in the Python folder?

For measuring processing times, the recommended module is timeit.

3

instead of

import timer

try

from timer import timer

and see if it helps

4

Hello all,

thank you for responding to my query.

This is the test script in its totality:

# File timeseqs.py
"Test the relative speed of iteration tool alternatives."

import sys, timer # Import timer functions

reps = 10000
repslist = list(range(reps)) # Hoist out, list in both 2.X/3.X

def forLoop():
    res = []
    for x in repslist:
        res.append(abs(x))
    return res
    
def listComp():
    return [abs(x) for x in repslist]

def mapCall():
    return list(map(abs, repslist)) # Use list() here in 3.X only!

 # return map(abs, repslist)
def genExpr():
    return list(abs(x) for x in repslist) # list() required to force results

def genFunc():
    def gen():
        for x in repslist:
            yield abs(x)
    return list(gen()) # list() required to force results

print('\nSystem version:',sys.version)
print('\n')
for test in (forLoop, listComp, mapCall, genExpr, genFunc):
    (bestof, (total, result)) = timer.bestoftotal(5, 1000, test)
    print ('%-9s: %.5f => [%s...%s]' % (test.__name__, bestof, result[0], result[-1]))

I believe that printout is due to the timer module.

5

Doh!

My mistake.

This was a file from a previous example that I had worked on named timer.py.
Thus, it is not a Python module. Since I am following the book, it is from an
earlier file that we had worked on and of which I had added my own code for
testing purposes at the time. Namely, printing out those values.

My mistake.

My apologies. :open_mouth: … :flushed: