pythonのjupyternote bookでエラーコードが出てしまう

下記のコードを実行すると、spyderでは実行できるのに
jupyternote bookではエラーコードが出てしまいます。
なぜでしょうか。

import more_itertools as mit

def consecutive_groups(iterable):
    """Yield range of consecutive numbers."""
    for group in mit.consecutive_groups(iterable):
        group = list(group)
        if len(group) == 1:
            yield group[0]
        else:
            yield group[0], group[-1]

path = 'pdb1ufq.ent'

serial_numbers_A = []  
serial_numbers_B = []  
with open(path) as f:
    lines = f.readlines()
    
lines_strip = [line.strip() for line in lines]

#A側のＣＡの抽出------------------------------------
for A_and in lines:
    A_and=A_and.split()
    if A_and[0] == 'ATOM' and A_and[2] == 'CA' and A_and[4] == 'A':
        serial_numbers_A.append(int(A_and[5]))

print("A側のCA")
for Agroup in consecutive_groups(serial_numbers_A):
     print(list(Agroup))

#B側のCAの抽出-------------------------------------
for B_and in lines:
    B_and=B_and.split()
    if B_and[0] == 'ATOM' and B_and[2] == 'CA' and B_and[4] == 'B':
        serial_numbers_B.append(int(B_and[5]))

print("------------------------------------------")
print("B側のCA")
for Bgroup in consecutive_groups(serial_numbers_B):
     print(list(Bgroup))
コード

エラーコード

A側のCA
---------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-56-7a4442a92740> in <module>
     26 
     27 print("A側のCA")
---> 28 for Agroup in consecutive_groups(serial_numbers_A):
     29      print(Agroup)
     30 

<ipython-input-56-7a4442a92740> in consecutive_groups(iterable)
      4     """Yield range of consecutive numbers."""
      5     for group in mit.consecutive_groups(iterable):
----> 6         group = list(group)
      7         if len(group) == 1:
      8             yield group[0]

TypeError: 'list' object is not callable

なにが駄目なのでしょうか。