如何将数组迭代保存到python中的文件? [英] How to save array iteratively to file in python?

问题描述

我想在for循环中执行以下操作:

I want to do in a for loop something like this:

for i in range(n):
   x = vector()
   np.savetxt('t.txt', x, newline=" ")

但是我想将每个数组x保存为文件中的新行，但是上面的代码并没有发生这种情况，有人可以帮忙吗?谢谢！

but I want to save each array x as a new line in my file, but this doesn't happen with the code above, can anybody help? Thanks!

推荐答案

尝试一下:

with open('t.txt', 'w') as f:
    for i in range(n):
        x = vector()
        np.savetxt(f, x, newline=" ")
        f.write('\n')

也就是说，将已经打开的文件句柄传递给numpy的savetxt函数.这样，它将不会覆盖现有内容.另请参见将元素附加到二进制文件

That is, pass an already open file handle to the numpy's savetxt function. This way it will not overwrite existing content. Also see Append element to binary file

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