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如何在python 3.8中反转txt文件?[已关闭]

txt file python

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Clownpiece · 技术社区 · 3 年前

data = data2 = data3 = ""

with open('pushkin.txt', encoding='utf-8', mode='r') as fp:
    data = fp.read()

with open('romeo.txt', encoding='utf-8', mode='r') as fp:
    data2 = fp.read()
with open('byron.txt', encoding='utf-8', mode='r') as fp:
    data3 = fp.read()


data += "\n"
data += data2 + data3

with open('poems.txt', 'w', encoding='utf-8') as fp:
    fp.write(data)

通过这段代码,我将三个文本文件转换为一个。现在,我需要翻转该文件中的文本,如下所示:

ABC       CDA
BCA  -->  BCA
CDA       ABC

但我不知道怎么做。我想用 reverse() 或 reversed() ,但这只是因为 abc 到 cba

1 回复 | 直到 3 年前

1

Park 3 年前

您可以使用 reverse() 将所有内容保存为后反转列表中元素的顺序 list 键入到 data 变量,而不是特定字符串,如下所示:

data = []

with open('1.txt', encoding='utf-8', mode='r') as fp: # ABC
    data += fp.readlines()
    # data -> ['ABC\n']

with open('2.txt', encoding='utf-8', mode='r') as fp: # BCA
    data += fp.readlines()
    # data -> ['ABC\n', 'BCA\n']

with open('3.txt', encoding='utf-8', mode='r') as fp: # CDA
    data += fp.readlines()
    # data -> ['ABC\n', 'BCA\n', 'CDA\n']

data.reverse() # data becomes ['CDA\n', 'BCA\n', 'ABC\n']

with open('result.txt', 'w', encoding='utf-8') as fp:
    fp.write("".join(data))

# result.txt
CDA
BCA
ABC