error: cannot call value of non-function type 'PythonObject' about swift

[dan-zheng]

@dynamicCallable is done as of apple/swift@2142075 and has been added to PythonObject.
You can now run the following:

$ swift
Welcome to Swift version 4.2-dev (LLVM 04bdb56f3d, Clang b44dbbdf44, Swift 70260a59ef). Type :help for assistance.
  1> import Python
  2. let np = Python.import("numpy")
np: Python.PythonObject = <module 'numpy' from '/Users/danielzheng/Library/Python/2.7/lib/python/site-packages/numpy/__init__.pyc'>
  3> let a = np.arange(15).reshape(3, 5)
a: Python.PythonObject =
[[ 0  1  2  3  4]
 [ 5  6  7  8  9]
 [10 11 12 13 14]]
  4> let b = np.array([6, 7, 8])
b: Python.PythonObject = [6 7 8]

Please download the latest Swift for TensorFlow packages to try it out!

[dan-zheng]

This is because @dynamicCallable is not yet implemented.

Until then, you'll need to write .call(with:) explicitly:
np.arange.call(with: 15).reshape.call(with: 3, 5)

@dynamicCallable is currently being implemented and should be pushed within a week! I'll update here when it's pushed.

[Honghe]

Got it, Thanks!