python – 从列表中删除字典

概述我有一个CSV文件,我读作每行的字典列表.我想删除列表中具有EmailAddress”的所有条目.我试过了： #!/usr/bin/pythonimport csvdef import_users(location_of_file): with open(location_of_file, 'r', newline='', encoding='utf-8-sig') as open 我有一个CSV文件,我读作每行的字典列表.我想删除列表中具有EmailAddress”的所有条目.我试过了：

#!/usr/bin/pythonimport csvdef import_users(location_of_file):    with open(location_of_file,'r',newline='',enCoding='utf-8-sig') as openfile:       reader = csv.DictReader(openfile)       for row in reader:            yIEld rowdef save_csv(data,location):   with open(location,'w',enCoding='utf-8-sig') as file:       fIEldnames = ['EmailAddress','Givenname','Surname','Company','Department']       writer = csv.DictWriter(file,fIEldnames=fIEldnames)       writer.writeheader()       for item in data:           writer.writerow(item)if __name__ == '__main__':    users = List(import_users('C:\Temp\Example.csv'))    for user in users:        if user['EmailAddress'] == '':            del user        else:            pass    save_csv(users,'C:\Temp\Output.csv')

但我的结果仍然是没有电子邮件地址的条目.我究竟做错了什么？

解决方法 不要在刺激他们的同时更改列表项目.

代替

for user in users:    if user['EmailAddress'] == '':        del user     else:        pass

做

users = filter(lambda user: user['EmailAddress'] != '',users)

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