Question

首先，我最近开始学习python。所以我是初学者。

假设我在文本文件中有这些值。与标题中一样，我想在特定列中搜索txt文件中的特定值，然后返回特定值的行，但搜索的＆＃34;值＆＃34;除外。

示例：

在第一列搜索1113值然后将2 3返回为：

x = 2
y = 3

Answer 1

你可以试试这个：

<div class="rates">
        <? foreach ($rates as $rate) { ?>
            <div class="rates-block" <? if ($rate->id % 4 != 1) { ?> style="margin-left: 48px;" <? } ?>>
                <img src="/images/aukc_image/<?= $rate->img ?>" class="products-img rate-img" alt="product-1">
            </div>
            <input class="rate-radio" type="radio" name="radio1" value="<?= $rate->count ?>;<?= $rate->price ?>">
        <? } ?>
    </div>

Answer 2

尝试这样的事情：

with open('file.txt', 'r') as f:
    for line in f:
        if line.startswith('1113'):
            line = line.split()
            x = int(line[1])
            y = int(line[2])

作为'file.txt'放置您的文件名，而'1113'放置您要查找的值。祝你好运

Answer 3

有一个csv模块可以为您完成所有肮脏的工作：

import csv

def find(filename, number):
    with open(filename) as file:
        reader = csv.DictReader(file,
                                fieldnames=['col1', 'col2', 'col3'],
                                delimiter=' ')
        for line in reader:
            if line['col1'] == str(number):
                return (line['col2'], line['col3'])

if __name__ == '__main__':
    (x, y) = find('data.txt', 1113) or (None, None)
    print(x, y)

Answer 4

我更喜欢：

search_text = '1113'
with open(FileName) as f:
    for i in f:
        if i.strip() != '':
            for j in i.strip().split():
                if j[0] == search_text:
                    x = int(i[1])
                    y = int(i[2])

Answer 5

这将允许您搜索任何列上的任何值。

import csv


def find(reader, col, val):
    for row in reader:
        if row[col] == val:
            return row
    raise ValueError('Value {} not found in row {}'.format(val, col))


def findexcept(reader, col, val):
    r = find(reader, col, val)
    r.pop(col)
    return r

with open('searchdata.txt') as f:
    lines = (line.strip() for line in f)
    c = csv.reader(lines, delimiter=' ', skipinitialspace=True)

    try:
        x = findexcept(c, 0, '1114')
        print(x)
    except ValueError as ve:
        print('Error: {}'.format(ve))

在python中，如何在特定列中搜索txt文件中的特定值，然后返回特定值的行？

5 个答案: