我的generate_report
函数有2个参数。在generate_report
函数中,我有另一个名为generate_sub_report
的函数。我想在report_type
中使用参数date_range
和generate_sub_report
。
def generate_report(report_type, date_range):
with open('file.csv') as f:
# do some stuff
def generate_sub_report():
report_map = {'Budget': ['a', 'b', 'c'], 'Finance': ['d', 'e', 'f']}
get_list_from_dict = report_map.get(report_type)
if date_range == 'Summary':
columns = ...
如何在report_type
中使用功能参数date_range
和generate_sub_report
?我想说的是,如何让generate_sub_report
继承generate_report
的参数?
已编辑/已更新的问题
运行以下代码。
它抛出:
UnboundLocalError: local variable 'date_range' referenced before assignment
如果我改变def get_keyword_report_request(report_type, date_range):
的想法可能是我必须通过嵌套函数传递参数,那么它会抛出:
TypeError: get_keyword_report_request() missing 2 required positional arguments: 'report_type' and 'date_range'
def generate_report(report_type, date_range):
def get_keyword_report_request():
columns_map = {
"Account": ["AccountName", "AccountId", "Impressions", "Clicks", "Spend",
"Conversions"],
"Campaign": ["AccountName", "AccountId", "CampaignName", "Status", "Impressions",
"Clicks", "Spend", "Conversions"],
"Keyword": ["AccountName", "AccountId", "CampaignName", "CampaignStatus",
"AdGroupName", "AdGroupStatus", "Keyword", "KeywordStatus",
"BidMatchType", "CurrentMaxCpc", "Impressions", "Clicks", "Spend",
"AveragePosition", "Conversions"],
"Ad group": ["AccountName", "AccountId", "CampaignName", "AdGroupName", "Status",
"Impressions", "Clicks", "Spend", "AveragePosition", "Conversions"],
"Search Query": ["AccountName", "AccountId", "CampaignName", "CampaignStatus",
"AdGroupName", "SearchQuery", "Keyword", "BidMatchType",
"DeliveredMatchType", "Impressions", "Clicks", "Spend",
"AveragePosition", "Conversions"],
"Ad": ["AccountName", "AccountId", "CampaignName", "AdGroupName", "Status",
"AdTitle", "AdDescription", "DisplayUrl", "DestinationUrl", "AdStatus",
"Impressions", "Clicks", "Spend", "AveragePosition", "Conversions"]
}
columns = columns_map.get(report_type)
if isinstance(date_range, list):
# do this
print('wha')
elif isinstance(date_range, str):
date_range = date_range
print(date_range)
return(date_range, report_type)
get_keyword_report_request()
generate_report('Keyword', 'Summary')
我的第一个问题仍然存在:如何在较大函数内的嵌套/内部函数中使用顶级函数的参数?这可能是超级基本的,我可能是一个白痴,大拇指向下,这没关系。我显然不理解一些非常基本的东西。抱歉最初缺乏清晰度。
答案 0 :(得分:3)
report_type
已经可以使用generate_subreport
,因为它会被自动捕获。这是证据:
>>> def generate_report(report_type):
... def generate_subreport():
... print "the report type is " + report_type
... generate_subreport()
...
>>> generate_report('Big Report')
the report type is Big Report
>>> generate_report('Small Report')
the report type is Small Report
>>>
恭喜,您已经发现了一个已知的Python疣。 任何分配的变量都假定为局部变量。
这有效:
>>> def generate_report(date_range):
... def get_keyword_report_request():
... print date_range
... get_keyword_report_request()
...
>>> generate_report('Annually')
Annually
但这失败了
>> def generate_report(date_range):
... def get_keyword_report_request():
... print date_range
... date_range = 'Monthly' # one extra line
... get_keyword_report_request()
...
>>> generate_report('Annually')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 5, in generate_report
File "<stdin>", line 3, in get_keyword_report_request
UnboundLocalError: local variable 'date_range' referenced before assignment
Python看到你在内部函数中分配了date_range变量,并决定它需要在内部函数中声明一个新的date_range
局部变量,并且当你调用{{1}时它会引发错误,因为内部print date_range
尚未初始化。
您的修复 - 是删除date_range
作业。它什么都没做。
date_range = date_range