Python用过的小知识备忘录

from queue import Queue
from queue import PriorityQueue
prioqueue=PriorityQueue()
prioqueue.put((1,‘hahaha‘))  
prioqueue.put((5,‘ustc‘))
prioqueue.put((2,‘nwsuaf‘))
prioqueue.put((3,‘tsinghua‘))
prioqueue.put((6,‘peking‘))
prioqueue.put((4,‘zhejiang‘))

while prioqueue:
    print (prioqueue.get_nowait())

import pylab as pl
import matplotlib
x=[10,20,11,12,15,25]
y=[3,6,9,8,7,4]
co=[1,2,3,4,5,6]
fig1=pl.figure()
cm=pl.get_cmap("RdYlGn")
for i in range(0,len(x)):
    pl.plot(x[i],y[i],‘o‘,color=cm(co[i]*1.0/6))
    pl.text(x[i],y[i],str(y[i])+‘*‘,color=‘red‘)
pl.xlim(0,45)
pl.title(‘cluster graph ‘)
pl.show()