ValueError: Cannotrunmultiple SparkContextsatonce; existing SparkContext(app=PySparkShell, master=local[*]) createdby module at/usr/local/lib/python2.7/dist-packages/IPython/utils/...blog.csdn.net

#python#pycharm本文介绍了一种使用Python编程语言生成心形图案的方法,并通过循环和条件判断将特定字符串绘制为心形.举报举报python语言打印一颗爱心...blog.csdn.net

anaconda4.2(python3.5)可参考:.#studentExample 例子 练习 def map_func(x): s = x.split() return (s[0], [int(s[1]),int(s[2]),int(s[3])]) #返回为(key,vaklue)格式,其中key:x[0],value:x[1...blog.csdn.netTIME.rfTime = +new Date;