Plot is not showing up

[sharanbr]

* I am pretty new to Python *

I am trying to create a python program for machine learning.
The code shown below is expected to create a plot but program runs and comes out without any error but no plot. Am I making any mistake?

# Imports
from matplotlib import pyplot as plt
from sklearn.datasets import load_iris
import numpy as np

# load the data with load_iris from sklearn
data = load_iris()
features = data['data']
feature_names = data['feature_names']
target = data['target']

#print("features\n",features)
#print("feature names\n",feature_names)
#print("target\n",target);
print("data\n",data)

for t,marker,c in zip(range(3),">ox","rgb"):
    # plot each class on its own to get different colored markers
    plt.scatter(features[target == t,0],
                features[target == t,1],
                marker=marker,
                c=c)

[buran]

It looks the problem is you don't call plt.show() at the end