df
Out[51]:
    Unnamed: 0  TRACK_ID  TRACK_DURATION  TRACK_DISPLACEMENT
0            0         2           0.559               0.066
1           28       673           0.559               0.132
2           19       465           0.559               0.206
3           27       660           0.602               0.187
4           21       479           0.602               0.497
5           17       440           0.602               0.351
6           29       725           0.602               0.059
7           10       324           0.602               0.112
8           30       782           0.602               0.412
9            7       152           0.602               0.308
10           2        49           0.602               0.048
11           1        14           0.645               0.051
12          15       401           0.688               0.391
13          11       331           0.731               0.173
14          26       608           0.731               0.579

df = pd.read_csv('/Users/Desktop/SMT analysis codes/Sort.csv')

df1 = df.set_index(['TRACK_DURATION'])

sets = df1.loc[0.599, 'TRACK_ID']

M = sets.values.tolist()

import pandas as pd


df = pd.read_csv('/Users/Desktop/SMT analysis codes/Sort.csv')

df1 = df.set_index(['TRACK_DURATION'])
sets = df1.loc[0.558:0.559, 'TRACK_ID']
M = sets.values.tolist()

import pandas as pd
import numpy as np

df = pd.read_csv('/Users/Desktop/SMT analysis codes/Sort.csv')
M = df[np.isclose(df['TRACK_DURATION'], 0.559)]['TRACK_ID'].tolist()

>>> M
[2, 673, 465]