Append a dict in a nested dict python

Question

I would like to have a dictionary appended with new dictionaries.

t = {}
t['bush_mod']={} # Toplevel
ana1 = {}
ana1['ana1_lin_001']={}
t['bush_mod'] = ana1 # Add below Toplevel

ana2 = {}
ana2['ana2_lin_001'] = {}
ana2['ana2_lin_002'] = {}

t['bush_mod'] = ana2 # Add below Toplevel

When I add ana2 the dictionary t gets overwritten which i do not want.

OUT: {'bush_mod': {'ana2_lin_001': {}, 'ana2_lin_002': {}}}

I wanted to have ana2 as the second dict (appended) below the Toplevel.

OUT: {'bush_mod': {'ana1_lin_001': {}},{'ana2_lin_001': {}, 'ana2_lin_002': {}}}

It would really be helpful if someone could help me with the syntax.

Thanks in advance!

Answer 1

If you want to stick to nested dictionaries I think dict.update might be an option:

t = {}
t['bush_mod']={}

ana1 = {}
ana1['ana1_lin_001']={}

ana2 = {}
ana2['ana2_lin_001'] = {}
ana2['ana2_lin_002'] = {}

t['bush_mod'].update(ana1)
t['bush_mod'].update(ana2)

Such that t is:

{'bush_mod': {'ana1_lin_001': {}, 'ana2_lin_001': {}, 'ana2_lin_002': {}}}

dict.update here adds the keys-value pairs from ana1 and ana2 to the dictionary t['bush_mod ]`

Answer 2

you need to use distinct keys for each element in the dict t... it is overriding because you used 'bush_mod' twice...

you need to make t['bush_mod']= [] then append that list with things.

t['bush_mod'] = []
t['bush_mod'].append(ana1)
t['bush_mod'].append(ana2)