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add Coalesce , can use list config, for example: #290

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add Coalesce , can use list config, for example: #290

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33 changes: 25 additions & 8 deletions glom/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -919,14 +919,31 @@ def __init__(self, *subspecs, **kwargs):
def glomit(self, target, scope):
skipped = []
for subspec in self.subspecs:
try:
ret = scope[glom](target, subspec, scope)
if not self.skip_func(ret):
break
skipped.append(ret)
except self.skip_exc as e:
skipped.append(e)
continue
if isinstance(subspec, list):
ret = []
for i,subspec_item in enumerate(subspec,start=1):
try:
ret_item = scope[glom](target, subspec_item, scope)
if not self.skip_func(ret_item):
ret.append(ret_item) # 只追加有效结果
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weishenme zhongwen zheli lai le? :P

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i am Chinese ，you can change it to english , # 只追加有效结果 means , only add useful result

else:
skipped.append(ret_item)

except self.skip_exc as e:
skipped.append(e)
continue
if ret: # 如果收集到有效结果，返回
return ret
# 如果 ret 为空，继续外层循环
else:
try:
ret = scope[glom](target, subspec, scope)
if not self.skip_func(ret):
break
skipped.append(ret)
except self.skip_exc as e:
skipped.append(e)
continue
else:
if self.default is not _MISSING:
ret = arg_val(target, self.default, scope)
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