nos - 4 months ago 27

Python Question

What is the easiest way to save and load data in python, preferably in a human-readable output format?

The data I am saving/loading consists of two vectors of floats. Ideally, these vectors would be named in the file (e.g. X and Y).

My current

`save()`

`load()`

`file.readline()`

`file.write()`

Answer

There are several options -- I don't exactly know what you like. If the two vectors have the same length, you could use `numpy.savetxt()`

to save your vectors, say `x`

and `y`

, as columns:

```
# saving:
f = open("data", "w")
f.write("# x y\n") # column names
numpy.savetxt(f, numpy.array([x, y]).T)
# loading:
x, y = numpy.loadtxt("data", unpack=True)
```

If you are dealing with larger vectors of floats, you should probably use NumPy anyway.