在矩阵中打印嵌套字典 - python

Question

Looking for a way to print a nested dictionary as a matrix:

Input

nestedD ={'h1': {r1: float1, r2: float2, r3: float3}, 'h2': {r1: float4, r2: float5, r3: float6}, 'h3': {r1: float7, r2: float8, r3: float9}}

Output
|    |    h1    |    h2    |    h3   |
| -- | -------- | -------- | ------- |
| r1 | float1   | float4   | float7  |
| r2 | float2   | float5   | float8  |
| r3 | float3   | float6   | float9  |

So far I have this:

for h, innerD in nestedD.items():
            print (h)
            for r in innerD:
                print("{: >10} {: >10} {: >10}".format(*innerD[r]))
                

TypeError: format() argument after * must be an iterable, not float

How can I iterate through floats of the inner dictionaries using format()?

Answer 1

for h, innerD in nestedD.items():
            print (h)
            print("{: >10} {: >10} {: >10}".format(*innerD.values()))

So the reason for the error that you are getting is that innerD[r] resolves to the number at the address nestedD[h][r] . The star passes something you can iterate over (like a list) as the list of parameters to the function. Since you have 3 format arguments, format should be passed with 3 arguments. In the updated code above the three arguments come from the values of the inner dictionary.

Reading through your question again it seems that still isn't quite what you want. It seems you want to do a kind of rotation on the dictionary first. The answer above will order the values incorrectly.

print("|__| {} | {} | {} |".format(*nestedD.keys()))
headers = nestedD.keys()
# There is an assumption here that all the inner dictionaries have the same keys
rows = nestedD.values[0].keys() 
rotatedD = dict([(row,dict([(header, nestedD[header][row]) for header in headers])) for row in rows])
for key, values in rotatedD:
    str_values = "|".join(["{: >10}".format(v) for v in values])
    print("|{key}|{values}|".format(key=key, values=str_values))