[英]how do you delete the line with the biggest number from a text file python?
with open('winnernum.txt', 'r') as b:
data = b.readlines()
gone=(max(data))
print(gone)
with open("winnernum.txt","r") as h:
del gone
我已經在 python 中嘗試了這個和這個代碼的其他變體,但它仍然不會刪除。 我需要從文本文件中打印前 5 個最大的數字。
我以前嘗試過使用它:
with open('winners.txt', 'r') as b:
data = b.readlines()
gone=(max(data))
print(gone)
import heapq
print(heapq.nlargest(5, winner))
但這並不總是選擇前 5 個數字,而是傾向於隨機選擇它們。 請幫忙!
這是一個簡單的解決方案:
from heapq import nlargest
with open("winnernum.txt", "r") as f:
numbers = [float(line.rstrip()) for line in f.readlines()]
largest = nlargest(5, numbers)
print(largest)
嘗試這個:
from contextlib import closing
with closing(open('winners.txt', 'r')) as file:
gone = max(map(lambda x: x.rstrip('\n'), file.readlines()))
print(gone)
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