Python 格式表格输出 [英] Python format tabular output

问题描述

使用 python2.7，我试图打印到屏幕表格数据.

Using python2.7, I'm trying to print to screen tabular data.

这大概是我的代码的样子:

This is roughly what my code looks like:

for i in mylist:
   print "{}\t|{}\t|".format (i, f(i))

问题在于，根据i 或f(i) 的长度，数据不会对齐.

The problem is that, depending on the length of i or f(i) the data won't be aligned.

这是我得到的:

|foo |bar |
|foobo   |foobar  |

我想得到什么:

|foo     |bar     |
|foobo   |foobar  |

是否有任何模块允许这样做?

Are there any modules that permit doing this?

推荐答案

推出自己的格式化功能并不难:

It's not really hard to roll your own formatting function:

def print_table(table):
    col_width = [max(len(x) for x in col) for col in zip(*table)]
    for line in table:
        print "| " + " | ".join("{:{}}".format(x, col_width[i])
                                for i, x in enumerate(line)) + " |"

table = [(str(x), str(f(x))) for x in mylist]
print_table(table)

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