Use 'import module' or 'from module import'?

Question

I\'ve tried to find a comprehensive guide on whether it is best to use import module or from module import. I\'ve just started with Python and I\'m

Answer 1

This is my directory structure of my current directory:

.  
└─a  
   └─b  
     └─c

1. The import statement remembers all intermediate names.
   These names have to be qualified:

   In[1]: import a.b.c
   
   In[2]: a
   Out[2]: 
   
   In[3]: a.b
   Out[3]: 
   
   In[4]: a.b.c
   Out[4]: 
   

2. The from ... import ... statement remembers only the imported name.
   This name must not be qualified:

   In[1]: from a.b import c
   
   In[2]: a
   NameError: name 'a' is not defined
   
   In[2]: a.b
   NameError: name 'a' is not defined
   
   In[3]: a.b.c
   NameError: name 'a' is not defined
   
   In[4]: c
   Out[4]: 
   

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• Note: Of course, I restarted my Python console between steps 1 and 2.