How can I write data in YAML format in a file?
import yamldata = 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: aB: {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: aB: C: c D: d E: e