在 Python 中编写人类可读的空白分隔文本

发布于 2024-09-18 11:38:57 字数 495 浏览 12 评论 0原文

我有一个看起来像这样的列表列表：

data = [['seq1', 'ACTAGACCCTAG'],
        ['sequence287653', 'ACTAGNACTGGG'],
        ['s9', 'ACTAGAAACTAG']]

我将信息写入这样的文件：

for i in data:
    for j in i:
        file.write('\t')
        file.write(j)
    file.write('\n')

输出看起来像这样：

seq1   ACTAGACCCTAG  
sequence287653   ACTAGNACTGGG  
s9   ACTAGAAACTAG

由于每个内部列表中第一个元素的长度不同，列排列不整齐。如何在第一个和第二个元素之间写入适量的空格以使第二列对齐以便于人类可读？

原文

I have a list of lists that looks something like this:

data = [['seq1', 'ACTAGACCCTAG'],
        ['sequence287653', 'ACTAGNACTGGG'],
        ['s9', 'ACTAGAAACTAG']]

I write the information to a file like this:

for i in data:
    for j in i:
        file.write('\t')
        file.write(j)
    file.write('\n')

The output looks like this:

seq1   ACTAGACCCTAG  
sequence287653   ACTAGNACTGGG  
s9   ACTAGAAACTAG

The columns don't line up neatly because of variation in the length of the first element in each internal list. How can I write appropriate amounts of whitespace between the first and second elements to make the second column line up for human readability?

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海拔太高太耀眼 2024-09-25 11:38:57

您需要一个格式字符串：

for i,j in data:
    file.write('%-15s %s\n' % (i,j))

%-15s 表示左对齐字符串的 15 个空格字段。这是输出：

seq1            ACTAGACCCTAG
sequence287653  ACTAGNACTGGG
s9              ACTAGAAACTAG

You need a format string:

for i,j in data:
    file.write('%-15s %s\n' % (i,j))

%-15s means left justify a 15-space field for a string. Here's the output:

seq1            ACTAGACCCTAG
sequence287653  ACTAGNACTGGG
s9              ACTAGAAACTAG

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飞烟轻若梦 2024-09-25 11:38:57

data = [['seq1', 'ACTAGACCCTAG'],
        ['sequence287653', 'ACTAGNACTGGG'],
        ['s9', 'ACTAGAAACTAG']]
with open('myfile.txt', 'w') as file:
    file.write('\n'.join('%-15s %s' % (i,j) for i,j in data) )

对我来说比循环表达式更清晰

data = [['seq1', 'ACTAGACCCTAG'],
        ['sequence287653', 'ACTAGNACTGGG'],
        ['s9', 'ACTAGAAACTAG']]
with open('myfile.txt', 'w') as file:
    file.write('\n'.join('%-15s %s' % (i,j) for i,j in data) )

for me is even clearer than expression with loop

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