### Table Of Contents

- Input and output
  - Numpy binary files (NPY, NPZ)
  - Text files
  - Raw binary files
  - String formatting
  - Memory mapping files
  - Text formatting options
  - Base-n representations
  - Data sources

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# Input and output

## Numpy binary files (NPY, NPZ)

`load`(file[, mmap_mode, allow_pickle, ...]) | Load arrays or pickled objects from `.npy`, `.npz` or pickled files.
`save`(file, arr[, allow_pickle, fix_imports]) | Save an array to a binary file in NumPy `.npy` format.
`savez`(file, *args, **kwds) | Save several arrays into a single file in uncompressed `.npz` format.
`savez_compressed`(file, *args, **kwds) | Save several arrays into a single file in compressed `.npz` format.

The format of these binary file types is documented in http://docs.scipy.org/doc/numpy/neps/npy-format.html

## Text files

`loadtxt`(fname[, dtype, comments, delimiter, ...]) | Load data from a text file.
`savetxt`(fname, X[, fmt, delimiter, newline, ...]) | Save an array to a text file.
`genfromtxt`(fname[, dtype, comments, ...]) | Load data from a text file, with missing values handled as specified.
`fromregex`(file, regexp, dtype) | Construct an array from a text file, using regular expression parsing.
`fromstring`(string[, dtype, count, sep]) | A new 1-D array initialized from raw binary or text data in a string.
`ndarray.tofile`(fid[, sep, format]) | Write array to a file as text or binary (default).
`ndarray.tolist`() | Return the array as a (possibly nested) list.

## Raw binary files

`fromfile`(file[, dtype, count, sep]) | Construct an array from data in a text or binary file.
`ndarray.tofile`(fid[, sep, format]) | Write array to a file as text or binary (default).

## String formatting

`array2string`(a[, max_line_width, precision, ...]) | Return a string representation of an array.
`array_repr`(arr[, max_line_width, precision, ...]) | Return the string representation of an array.
`array_str`(a[, max_line_width, precision, ...]) | Return a string representation of the data in an array.

## Memory mapping files

`memmap` | Create a memory-map to an array stored in a binary file on disk.

## Text formatting options

`set_printoptions`([precision, threshold, ...]) | Set printing options.
`get_printoptions`() | Return the current print options.
`set_string_function`(f[, repr]) | Set a Python function to be used when pretty printing arrays.

## Base-n representations

`binary_repr`(num[, width]) | Return the binary representation of the input number as a string.
`base_repr`(number[, base, padding]) | Return a string representation of a number in the given base system.

## Data sources

`DataSource`([destpath]) | A generic data source file (file, http, ftp, ...).