文章浏览阅读1k次。如何把该数组内的数组元素遍历出来一般人都会用baifor循环来遍历整个数du组,然后挨个输出例如:int[] a = {1,zhi2,3,4,5};要将数组a打印出来,就是for(int i = 0;i<a.length;i++){System.out.println(a[i]);}这样就dao会......
文章浏览阅读189次。Intro有时候,需要把字符串当做代码执行,看个例子getattrGet a named attribute from an object; getattr(x, ‘y’) is equivalent to x.yimport pandas as pddf=pd.DataFrame({"x":[1,2,3]})getattr(df,"x").count()3getattr(df,“x”)相当......