Python script outputs nothing into console

Steps to reproduce:

1. Open Atom
2. Create Python file
3. Write code:
```python
print 23
```
4. Press Ctrl + Shift + B. It works as on screenshot.
5. Add `import sys` before print statement
```python
import sys
print 23
```
6. Run Ctrl + Shift + B again. Execution seems ok, but console output is empty as on screenshot.

My python version is `Python 2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:19:22) [MSC v.1500 32 bit (Intel)] on win32`, operating system is Windows 7 SP1 64-bit.