Как в отладчике просмотреть содержимое списка?

UnboundLocalError: local variable referenced before assignment

[['GROUP', 'FLUX', 'RAD-DIFF', 'AX-DIFF', 'TOT-DIFF', 'REMOVAL', 'ABSORPTION', 'NU-FISS', 'FISS', 'TRANSP', 'TOTAL'], ['1', '3.977888E+01', '1.425138E+00', '1.425138E+00', '1.425138E+00', '1.331315E-02', '1.207110E-02', '3.878784E-03', '1.419409E-03', '2.338955E-01', '2.932495E-01'], ['2', '5.682828E+00', '3.718616E-01', '3.718616E-01', '3.718616E-01', '1.690244E-03', '9.147231E-02', '9.343243E-02', '3.425082E-02', '8.963909E-01', '9.934033E-01'], ['0SCATTERING', 'MATRIX', '(SELFSCATTERING', 'UNCORRECTED)', '+', 'SELFSCATTERING', 'CORRECTED', 'BY', 'TRANSP', 'TOTAL'], ['1', '2'], ['1', '2.678652E-01', '1.331315E-02', '2.085112E-01']]
[]
Traceback (most recent call last):
  File "…", line 227, in <module>
    fun1(root, fatype, cr_stance, wt_cases, wt_xlist, wt_outfn)
  File "…", line 150, in b_process
    reslist.append(preprocess(root, burnup, fatype, cr_stance, cases, x_list))
  File "…", line 137, in fun2
    reslist1.append(derline(seek_get(fn, spatt, count), get_Ef(fn, efpatt)))
  File "…", line 55, in derline
    ml1, ml2, ml3 = matrix[1], matrix[2], matrix[5]
IndexError: list index out of range

import pdb; pdb.set_trace()

def seek_get(fname, spatt, count):
    matrix, found, remaining = [], False, count
    with open(fname, 'r') as inp:
        for line in inp:
            if found:
                if remaining == 0:
                    break
                matrix.append(line.split())
                remaining -= 1
            if line.startswith(spatt):
                found = True            
    return matrix

def derline(matrix, ef):
    res, mlf1, mlf2 = [], [], []
    ml1, ml2, ml3 = matrix[1], matrix[2], matrix[5]
    for i in range(len(ml1)):
        mlf1.append(float(ml1[i]))
        mlf2.append(float(ml2[i]))
    sig_s = float(ml3[2])

def preprocess(root, b, type, stance, cases, x_list):
    spatt = 'pattern1'
    efpatt = 'pattern2'
    count = 6
    reslist1 = []
    for cn in cases:
        cfn = 'n1-'+type+'-'+b+'-'+cn+'.out'
        for fn in glob.iglob(os.path.join(os.path.abspath(root), b, stance, cfn)):
            reslist1.append(derline(seek_get(fn, spatt, count), get_Ef(fn, efpatt)))

def seek_get(fname, spatt, count):
    matrix, found, remaining = [], False, count
    with open(fname, 'r') as inp:
        for line in inp:
            if found:
                if remaining == 0:
                    break
                matrix.append(line.split())
                remaining -= 1
            if line.startswith(spatt):
                found = True
    print 'matrix', matrix
    raw_input()
    return matrix

def preprocess(root, b, type, stance, cases, x_list):
    spatt = 'pattern1'
    efpatt = 'pattern2'
    count = 6
    reslist1 = []
    for cn in cases:
        cfn = 'n1-'+type+'-'+b+'-'+cn+'.out'
        for fn in glob.iglob(os.path.join(os.path.abspath(root), b, stance, cfn)):
            s = seek_get(fn, spatt, count)
            print 'seek_get:', s
            g = get_Ef(fn, efpatt)
            print 'get_Ef:', g
            d = derline(seek_get(fn, spatt, count), get_Ef(fn, efpatt))
            print 'derline', d
            raw_input()
            reslist1.append(derline(seek_get(fn, spatt, count), get_Ef(fn, efpatt)))

def seek_get(fname, spatt, count):
    matrix, found, remaining = [], False, count
    with open(fname, 'r') as inp:
        for line in inp:
            if found:
                if remaining == 0:
                    break
                matrix.append(line.split())
                remaining -= 1
            print '<0>'.format(line)
            raw_input()
            if line.startswith(spatt):
                print 'found: <{0}><{1}>'.format(line, spatt)
                raw_input()
                found = True
    return matrix

def seek_get(fname, spatt, count):
    matrix, found, remaining = [], False, count
    with open(fname, 'r') as inp:
        for line in inp:
            if found:
                print 'remaining:', remaining
                if remaining == 0:
                    break
                print 'append <{0}>'.format(line)
                raw_input()
                matrix.append(line.split())
                remaining -= 1
            if line.startswith(spatt):
                found = True
    return matrix