pyyaml

[vagrant@localhost python]$ pip3 install pyyaml
Collecting pyyaml
Downloading https://files.pythonhosted.org/packages/9e/a3/1d13970c3f36777c583f136c136f804d70f500168edc1edea6daa7200769/PyYAML-3.13.tar.gz (270kB)
100% |████████████████████████████████| 276kB 507kB/s
Installing collected packages: pyyaml
Running setup.py install for pyyaml … done
Successfully installed pyyaml-3.13

import yaml

yaml_str = """
Date: 2018-08-10
PriceList:
	-
		item_id: 1000
		name: Banana
		color: yellow
		price: 800
	-
		item_id: 1001
		name: Orange
		color: orange
		price: 1400
	-
		item_id: 1002
		name: Apple
		color: red
		price: 2400
"""

data = yaml.load(yaml_str)

for item in data['PriceList']:
	print(item["name"], item["price"])

yaml.scanner.ScannerError: while scanning for the next token
found character ‘\t’ that cannot start any token
in ““, line 4, column 1:
–
^
何故だ？

import yaml

customer = [
	{ "name": "Yamada", "age": "35", "gender": "man"},
	{ "name": "Sato", "age": "58", "gender": "woman"},
	{ "name": "Kato", "age": "42", "gender": "man"},
	{ "name": "Nishi", "age": "22", "gender": "man"}
]

yaml_str = yaml.dump(customer)
print(yaml_str)
print("--- --- ---")

data = yaml.load(yaml_str)

for p in data:
	print(p["name"])

書き出しは出来ますね。

[vagrant@localhost python]$ python3 app.py
– {age: ’35’, gender: man, name: Yamada}
– {age: ’58’, gender: woman, name: Sato}
– {age: ’42’, gender: man, name: Kato}
– {age: ’22’, gender: man, name: Nishi}

— — —
Yamada
Sato
Kato
Nishi

import yaml

yaml_str = """
color_def:
		- &color1 "#FF0000"
		- &color2 "#00FF00"
		- &color3 "#0000FF"

color:
	title: *color1
	body: *color2
	link: *color3
"""

data = yaml.load(yaml_str)
print("title=", data["color"]["title"])
print("body=", data["color"]["body"])
print("link=", data["color"]["link"])

yaml.scanner.ScannerError: while scanning for the next token
found character ‘\t’ that cannot start any token
in ““, line 3, column 1:
– &color1 “#FF0000”
なんだこれ？