?

%quickref

%magic

%alias?

!pwd

import numpy as np
np

2+3

_ **2

2**100

def factorial(n):
    if n==0:
        return 1
    return n*factorial(n-1)

factorial(10)

import this

%pylab inline

x = np.linspace(0, np.pi, 200)
y = np.sin(x**2)
plt.plot(x, y)