20112020.py

shuffle


import random
l=["h","a","b"]
random.shuffle(l)
print(l)


from collections import deque
d = deque([1, 2, 3])
p = d.popleft() 
d.appendleft(5)
print(d)



from collections import deque
d=deque(maxlen=3)
d.append(1)
d.append(20)
d.append(30)
print(d)


mport numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 2.0*np.pi, 101)
y = np.sin(x)
z = np.sinh(x)
# separate the figure object and axes object
# from the plotting object
fig, ax1 = plt.subplots()
# Duplicate the axes with a different y axis
# and the same x axis
ax2 = ax1.twinx() # ax2 and ax1 will have common x axis and different y axis
# plot the curves on axes 1, and 2, and get the curve handles
curve1, = ax1.plot(x, y, label="sin", color='r')
curve2, = ax2.plot(x, z, label="sinh", color='b')
# Make a curves list to access the parameters in the curves
curves = [curve1, curve2]
# add legend via axes 1 or axes 2 object.
# one command is usually sufficient
# ax1.legend() # will not display the legend of ax2
# ax2.legend() # will not display the legend of ax1
ax1.legend(curves, [curve.get_label() for curve in curves])
# ax2.legend(curves, [curve.get_label() for curve in curves]) # also valid
# Global figure properties
plt.title("Plot of sine and hyperbolic sine")
plt.show()


a=[1,2,3,4,8]
print(4 in a)


print(sorted((7,8,4,3)))


print('aasdd','jjjjjjd','oppsje',sep=',')