相关疑难解决方法(0)

Traceback (most recent call last):
  File "<pyshell#80>", line 1, in <module>
    do_work()
  File "C:\pythonwork\readthefile080410.py", line 14, in do_work
    populate_frequency5(e,data)
  File "C:\pythonwork\readthefile080410.py", line 157, in populate_frequency5
    data=medications_minimum3(data,[drug.upper()],1)
  File "C:\pythonwork\readthefile080410.py", line 120, in medications_minimum3
    counter[row[11]]+=1
TypeError: unhashable type: 'list'

我在这一行得到了上述错误:

data=medications_minimum3(data,[drug.upper()],1)

(我也试过没有括号的drug.upper())

以下是此功能的预览:

def medications_minimum3(c,drug_input,sample_cutoff): #return sample cut off for # medications/physician
  d=[]
  counter=collections.defaultdict(int)
  for row in c:
    counter[row[11]]+=1
  for row in c:
    if counter[row[11]]>=sample_cutoff:
      d.append(row) 
  write_file(d,'/pythonwork/medications_minimum3.csv')
  return d

有谁知道我在做错了什么？

我知道我调用这个函数的方式肯定是错误的,因为我从不同的位置调用这个函数并且它工作正常:

d=medications_minimum3(c,drug_input,50)

非常感谢您的帮助!