mistype in section #3?

[rafaellaurenti]

---

NameError Traceback (most recent call last)
Cell In[53], line 2
1 #One way of manually creating a database:
----> 2 db1 = bw.Database('3D')
3 db1.register()
4 db1.write({('3D', 'Printer'):{
5 'name': 'Printer',
6 'exchanges': [],
(...)
9 'categories': ('in the', 'universe')
10 }})

NameError: name 'bw' is not defined

Souldn't ot be db1 = bd.Database('3D') ?

[ChristinaKockel]

This continues throughout the script. Everywhere methods and databases is used, I think it should be bd. instead of bw.