Python - 使用Numpy，ValueError生成随机dna序列

there are two questions i would like to ask anybody that is familiar with numpy. i have seen very similar questions (and answers) but none of those used numpy which i would like to use since it offers a lot of other options i might want to use within that code in the future. i have tried to generate a list of random nucleotide sequences using "random" in python. since i wanted to have non-uniform probabilities i decided to use numpy instead. however, i get the error message: "ValueError: a must be 1-dimensional or an integer".there are two questions i would like to ask any