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python - append dictionary to data frame

I have a function, which returns a dictionary like this:

{'truth': 185.179993, 'day1': 197.22307753038834, 'day2': 197.26118010160317, 'day3': 197.19846975345905, 'day4': 197.1490578795196, 'day5': 197.37179265011116}

I am trying to append this dictionary to a dataframe like so:

output = pd.DataFrame()
output.append(dictionary, ignore_index=True)
print(output.head())

Unfortunately, the printing of the dataframe results in an empty dataframe. Any ideas?

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You don't assign the value to the result.

output = pd.DataFrame()
output = output.append(dictionary, ignore_index=True)
print(output.head())

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