显示memory usage35.3MB是什么意思
<class 'pandas.core.frame.DataFrame'>RangeIndex: 107587 entries, 0 to 107586
Data columns (total 43 columns):
# Column Non-Null Count Dtype
--------- -------------- -----
0 sub_grade 107587 non-nullint64
1 dti 107587 non-nullint64
2 delinq_2yrs 107587 non-nullint64
3 earliest_cr_line 107587 non-nullint64
4 fico_range_low 107587 non-nullint64
5 inq_last_6mths 107587 non-nullint64
6 mths_since_last_delinq 107587 non-nullint64
7 pub_rec 107587 non-nullint64
8 revol_bal 107587 non-nullint64
9 revol_util 107587 non-nullint64
10mths_since_last_major_derog 107587 non-nullint64
11tot_cur_bal 107587 non-nullint64
12open_acc_6m 107587 non-nullint64
13open_il_12m 107587 non-nullint64
14open_il_24m 107587 non-nullint64
15mths_since_rcnt_il 107587 non-nullint64
16open_rv_12m 107587 non-nullint64
17open_rv_24m 107587 non-nullint64
18max_bal_bc 107587 non-nullint64
19all_util 107587 non-nullint64
20inq_last_12m 107587 non-nullint64
21acc_open_past_24mths 107587 non-nullint64
22avg_cur_bal 107587 non-nullint64
23bc_open_to_buy 107587 non-nullint64
24mo_sin_old_il_acct 107587 non-nullint64
25mo_sin_old_rev_tl_op 107587 non-nullint64
26mo_sin_rcnt_rev_tl_op 107587 non-nullint64
27mo_sin_rcnt_tl 107587 non-nullint64
28mort_acc 107587 non-nullint64
29mths_since_recent_bc_dlq 107587 non-nullint64
30mths_since_recent_inq 107587 non-nullint64
31mths_since_recent_revol_delinq107587 non-nullint64
32num_accts_ever_120_pd 107587 non-nullint64
33num_actv_bc_tl 107587 non-nullint64
34num_actv_rev_tl 107587 non-nullint64
35num_bc_sats 107587 non-nullint64
36num_bc_tl 107587 non-nullint64
37num_rev_accts 107587 non-nullint64
38num_rev_tl_bal_gt_0 107587 non-nullint64
39num_tl_90g_dpd_24m 107587 non-nullint64
40num_tl_op_past_12m 107587 non-nullint64
41pct_tl_nvr_dlq 107587 non-nullint64
42pub_rec_bankruptcies 107587 non-nullint64
dtypes: int64(43)
memory usage: 35.3 MB
内存已使用：35.3兆字节
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