如何从*.txt文件中查找最小值

import csv

# preparing data - converting to array
rows = []
with open('sample.txt', mode='r') as infile:
    reader = csv.reader(infile, delimiter=" ")
    for row in reader:  # each row is a list
        rows.append(row)

# lambda function to filter min considering the second column
minimus = min(rows, key=lambda x: float(x[1]))

# done
print(minimus)

要获取具有最小值的行,请执行以下操作:

min_row = ''  
min_val = 1000000                   # Considering this value to be the highest
'''
Loop for reading rows in source file
'''
a, b = row.split(' ')
b = float(b)
if b < min_val:
    min_val = b
    min_row = row
'''
End of loop
'''

然后,在新文件中写入“min_row”。