例2.2

import numpy as np
a = []
with open('data2.txt', 'r', encoding='utf-8') as f:
for i, s in enumerate(f):
counts = (s.count('a'), s.count('c'), s.count('g'), s.count('t'))
a.append(counts)
b = np.array(a)
print(b)
print(3029
)