Execution time of the code

Question

Good evening, what could I do to know the time of each iteration that my code makes? Searching a little I found the command time.time(), but when the use in my code I get only 0.0 results. Someone could help me?

Follow the implementation of my code:

x_values = []
def eq_diff3(V):
    return -V/10
values_dt = [0.01,0.1,1,2,10]
T = 50
for dt in values_dt:
    start = time.time() #Começa contando aqui
    V0 = 50
    t = np.linspace(0,T,int(T/dt)+1)
    x = np.zeros(len(t))
    x[0] = V0    
    for i in range(1,len(t)):
        start = time.time()        
        x[i] = x[i-1] + eq_diff3(x[i-1])*dt    
    vm_all.append(x)
    x_values.append(t)
    end = time.time() # termina de contar aqui
    duration = end - start 
    print(duration) #printa quanto tempo demorou

Exit:

0.0
0.0
0.0
0.0
0.0

Answer 1

Use the timeit, he is more precise than the time for fast code snippet.

import timeit

tempo_inicial = timeit.default_timer()

print('Olá Mundo!')

tempo_final = timeit.default_timer()

print('Tempo Total:', tempo_final - tempo_inicial)

Also, inside your for loop has a line start = time.time(), I think you need to remove that line.