我看过所有其他的"返回没有"这里的问题,似乎都没有解决我的问题。
rates = []
for date in unformatted_returns: # Please ignore undefined variables, it is redundant in this context
if date[0] >= cutoff_date:
date_i = unformatted_returns.index(date)
r = date_initialize(date[0], date_i)
print "r is returned as:", r
rates.append(r)
print date[0]
else:
continue
def date_initialize(date, date_i):
print " initializing date configuration"
# Does a bunch of junk
rate_of_return_calc(date_new_i, date_i)
def rate_of_return_calc(date_new_i, date_i):
r_new = unformatted_returns[int(date_i)] # Reverse naming, I know
r_old = unformatted_returns[int(date_new_i)] # Reverse naming, I know
if not r_new or not r_old:
raise ValueError('r_new or r_old are not defined!!')
# This should never be true and I don't want anything returned from here anyhow
else:
ror = (float(r_new[1])-float(r_old[1]))/float(r_old[1])
print "ror is calculated as", ror
return ror
它们自身的功能很好,输出就像这样:
initializing date configuration
('2014-2-28', u'93.52')
ror is calculated as -0.142643284859
r is returned as: None
2015-2-2
>>>
ror
是正确的值,但是为什么在我写好return ror
时它不会被返回?对我没有任何意义
答案 0 :(得分:3)
你也需要在这里归还
def date_initialize(date, date_i):
print " initializing date configuration"
# Does a bunch of junk
return rate_of_return_calc(date_new_i, date_i)
答案 1 :(得分:0)
在date_initialize
中,您需要返回返回所需值的函数。明确地,从
rate_of_return_calc(date_new_i, date_i)
到
return rate_of_return_calc(date_new_i, date_i)
您第一次致电date_initialize
,不会返回任何内容。因此,当您致电rate_of_return_calc
时,您会收到该值,然后将其丢弃。您需要返回它以将值传递给主函数。
答案 2 :(得分:0)
您还需要返回date_initialize中的值:
def date_initialize(date, date_i):
print " initializing date configuration"
# Does a bunch of junk
return rate_of_return_calc(date_new_i, date_i)