我第一次使用Yaml(和Python!)。我试图从单个.yaml文件中加载多个文档,但没有得到我期望的结果。我期待一个包含每个文档的词典,但是我得到了一个生成器对象......?我应该注意,当我在单个文档yaml文件中的先前测试(而不是load_all())中使用yaml.load()时,我能够很好地获得字典。
我错过了哪些明显的事情阻止我接收多个文档?
测试yaml:
---
Tiles:
dungeon_floor:
name: 'Dungeon Floor'
blocked: False
block_sight: False
terrain_type: CONST.E_TERRAIN_TYPES.FLAT_FLOOR
persistent_effects: 'None'
...
---
NPCs:
gnoll:
name: "Gnoll"
equipment: Sword, Shield
def yaml_loader(filepath):
"""Load a yaml file."""
with open(filepath, "r") as file_descriptor:
data = yaml.load_all(file_descriptor)
return data
试图加载和打印字典的代码:
def yaml_loader(filepath):
"""Load a yaml file."""
with open(filepath, "r") as file_descriptor:
data = yaml.load_all(file_descriptor)
return data
if __name__ == "__main__":
filepath = CONST.YAML_ECS_CONFIG_PATH
data = yaml_loader(filepath)
print(data)
...产生以下终端输出:
<generator object load_all at 0x0000000003A64990>
Process finished with exit code 0
答案 0 :(得分:7)
好吧,看load_all implementation就会明白为什么会发生这种情况:
def load_all(stream, Loader=Loader):
"""
Parse all YAML documents in a stream
and produce corresponding Python objects.
"""
loader = Loader(stream)
try:
while loader.check_data():
yield loader.get_data()
finally:
loader.dispose()
它确实是一个发电机。所以你只需要将它转换为一个列表:
data = list(yaml.load_all(file_descriptor))