Answers for "python string as dictionary key"

poython str to dict

>>> D1={'1':1, '2':2, '3':3}
>>> s=str(D1)
>>> import ast
>>> D2=ast.literal_eval(s)
>>> D2
{'1': 1, '2': 2, '3': 3}

python dict keys to string

myList = ['Tom', 'Lisa', 'Chris', 'Joe']
separator = ' and ' # note the spaces around

s = separator.join(myList)

print(s)

## outputs:
## Tom and Lisa and Chris and Joe