0
for key in enron_data.keys():
if(enron_data[key]['email_address'] != 'NaN'):
count += 1
print count
enron_data是2D的字典,包含姓名&值,密鑰對如何在下列情況下使用列表理解?
for key in enron_data.keys():
if(enron_data[key]['email_address'] != 'NaN'):
count += 1
print count
enron_data是2D的字典,包含姓名&值,密鑰對如何在下列情況下使用列表理解?
可以使用LEN(..)
len([v for v in enron_data.values() if v['email_address'] != 'NaN'])
你可以試試這個:
print(sum(1 for key in enron_data.keys() if enron_data[key]["email_address"] != "NaN"))