I need to write the below data to yaml file using Python:
{A:a, B:{C:c, D:d, E:e}}
i.e., dictionary in a dictionary. How can I achieve this?
This question is related to
python
formatting
yaml
pyyaml
import yaml
data = dict(
A = 'a',
B = dict(
C = 'c',
D = 'd',
E = 'e',
)
)
with open('data.yml', 'w') as outfile:
yaml.dump(data, outfile, default_flow_style=False)
The default_flow_style=False parameter is necessary to produce the format you want (flow style), otherwise for nested collections it produces block style:
A: a
B: {C: c, D: d, E: e}
Link to the PyYAML documentation showing the difference for the default_flow_style parameter.
To write it to a file in block mode (often more readable):
d = {'A':'a', 'B':{'C':'c', 'D':'d', 'E':'e'}}
with open('result.yml', 'w') as yaml_file:
yaml.dump(d, yaml_file, default_flow_style=False)
produces:
A: a
B:
C: c
D: d
E: e
Source: Stackoverflow.com