In [31]: %run desktop/marks.py

---------------------------------------------------------------------------

TypeError                                 Traceback (most recent call last)

~\desktop\marks.py in <module>

      8     if region_code=="A":

      9         math_marks_A.append(math_mark)

---> 10 math_marks_mean = sum(math_marks_A)/len

     11 (math_marks_A)

     12 print (math_marks_mean)

TypeError: unsupported operand type(s) for /: 'float' and 'builtin_function_or_method'

<font color="#330099">math_marks_A=[]</font>

<font color="#330099">for line in open("desktop/student_record.txt"):</font>

<font color="#330099">    fields=line.split(";")</font>

<font color="#330099">    region_code=fields[0]</font>

<font color="#330099">    region_code_stripped=region_code.strip()</font>

<font color="#330099">    math_mark_str=fields[5]</font>

<font color="#330099">    math_mark=float(math_mark_str)</font>

<font color="#330099">    if region_code=="A":</font>

<font color="#330099">        math_marks_A.append(math_mark)</font>

<font color="#330099">
</font>

<font color="#330099">
</font>

<font color="#330099">math_marks_mean = sum(math_marks_A)/len</font>

<font color="#330099">(math_marks_A)</font>

<font color="#330099">print (math_marks_mean)</font>