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【教程】 PrettyTable介绍 - 让你的日志数据更美观

吃瓜群众小王发表于:5 月 10 日 00:14回复(1)

Python通过prettytable模块可以将输出内容如表格方式整齐的输出。

使用该模块,用户可以在日志中输出清晰的日志文档。

PrettyTable介绍¶

Python通过prettytable模块可以将输出内容如表格方式整齐的输出。

使用该模块,用户可以在日志中输出清晰的日志文档。

常用方法如下:¶

sortby - name of field to sort rows by
reversesort - True or False to sort in descending or ascending order
int_format - controls formatting of integer data
float_format - controls formatting of floating point data

add_row(row)
    """Add a row to the table

    Arguments:

    row - row of data, should be a list with as many elements as the table
    has fields"""

del_row(row_index)
    """Delete a row to the table

    Arguments:

    row_index - The index of the row you want to delete.  Indexing starts at 0."""

add_column(fieldname, column, align="c", valign="t")
    """Add a column to the table.

    Arguments:

    fieldname - name of the field to contain the new column of data
    column - column of data, should be a list with as many elements as the
    table has rows
    align - desired alignment for this column - "l" for left, "c" for centre and "r" for right
    valign - desired vertical alignment for new columns - "t" for top, "m" for middle and "b" for bottom"""

clear_rows()
    """Delete all rows from the table but keep the current field names"""

clear()
    """Delete all rows and field names from the table, maintaining nothing but styling options"""

示例如下:

from prettytable import *
x = PrettyTable(["City name", "Area", "Population", "Annual Rainfall"])
x.sortby = "Population"
x.reversesort = True
x.int_format["Area"] = "04d"
x.float_format = "6.1f"
x.align["City name"] = "l" # Left align city names
x.add_row(["Adelaide", 1295, 1158259, 600.5])
x.add_row(["Brisbane", 5905, 1857594, 1146.4])
x.add_row(["Darwin", 112, 120900, 1714.7])
x.add_row(["Hobart", 1357, 205556, 619.5])
x.add_row(["Sydney", 2058, 4336374, 1214.8])
x.add_row(["Melbourne", 1566, 3806092, 646.9])
x.add_row(["Perth", 5386, 1554769, 869.4])
print x 
+-----------+-------+------------+-----------------+
| City name |  Area | Population | Annual Rainfall |
+-----------+-------+------------+-----------------+
| Sydney    | 2058d |  4336374   |     1214.8f     |
| Melbourne | 1566d |  3806092   |      646.9f     |
| Brisbane  | 5905d |  1857594   |     1146.4f     |
| Perth     | 5386d |  1554769   |      869.4f     |
| Adelaide  | 1295d |  1158259   |      600.5f     |
| Hobart    | 1357d |   205556   |      619.5f     |
| Darwin    | 0112d |   120900   |     1714.7f     |
+-----------+-------+------------+-----------------+
# 通过行添加
row = PrettyTable()
row.field_names = ["City name", "Area", "Population", "Annual Rainfall"]
row.add_row(["Adelaide",1295, 1158259, 600.5])
row.add_row(["Brisbane",5905, 1857594, 1146.4])
row.add_row(["Darwin", 112, 120900, 1714.7])
row.add_row(["Hobart", 1357, 205556, 619.5])
row.add_row(["Sydney", 2058, 4336374, 1214.8])
row.add_row(["Melbourne", 1566, 3806092, 646.9])
row.add_row(["Perth", 5386, 1554769, 869.4])
print row
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
|  Adelaide | 1295 |  1158259   |      600.5      |
|  Brisbane | 5905 |  1857594   |      1146.4     |
|   Darwin  | 112  |   120900   |      1714.7     |
|   Hobart  | 1357 |   205556   |      619.5      |
|   Sydney  | 2058 |  4336374   |      1214.8     |
| Melbourne | 1566 |  3806092   |      646.9      |
|   Perth   | 5386 |  1554769   |      869.4      |
+-----------+------+------------+-----------------+
# 通过列添加
col = PrettyTable()
col.add_column("City name",["Adelaide","Brisbane","Darwin","Hobart","Sydney","Melbourne","Perth"],align="l",valign="t")
col.add_column("Area", [1295, 5905, 112, 1357, 2058, 1566, 5386])
col.add_column("Population", [1158259, 1857594, 120900, 205556, 4336374, 3806092, 1554769])
col.add_column("Annual Rainfall",[600.5, 1146.4, 1714.7, 619.5, 1214.8, 646.9, 869.4])
print col
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide  | 1295 |  1158259   |      600.5      |
| Brisbane  | 5905 |  1857594   |      1146.4     |
| Darwin    | 112  |   120900   |      1714.7     |
| Hobart    | 1357 |   205556   |      619.5      |
| Sydney    | 2058 |  4336374   |      1214.8     |
| Melbourne | 1566 |  3806092   |      646.9      |
| Perth     | 5386 |  1554769   |      869.4      |
+-----------+------+------------+-----------------+
# 行列混输
mix = PrettyTable()
mix.field_names = ["City name", "Area"]
mix.add_row(["Adelaide",1295])
mix.add_row(["Brisbane",5905])
mix.add_row(["Darwin", 112])
mix.add_row(["Hobart", 1357])
mix.add_row(["Sydney", 2058])
mix.add_row(["Melbourne", 1566])
mix.add_row(["Perth", 5386])
mix.add_column("Population", [1158259, 1857594, 120900, 205556, 4336374, 3806092, 1554769])
mix.add_column("Annual Rainfall",[600.5, 1146.4, 1714.7, 619.5, 1214.8, 646.9, 869.4])
print mix
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
|  Adelaide | 1295 |  1158259   |      600.5      |
|  Brisbane | 5905 |  1857594   |      1146.4     |
|   Darwin  | 112  |   120900   |      1714.7     |
|   Hobart  | 1357 |   205556   |      619.5      |
|   Sydney  | 2058 |  4336374   |      1214.8     |
| Melbourne | 1566 |  3806092   |      646.9      |
|   Perth   | 5386 |  1554769   |      869.4      |
+-----------+------+------------+-----------------+
# 清空行内容
mix.clear_rows()
print mix
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
+-----------+------+------------+-----------------+
# 清空内容
mix.clear()
print mix
++
||
++
++
# 加入转义字符
t = PrettyTable(['Field 1', 'Field 2'])
t.add_row(['value 1', 'value2\nsecond line'])
t.add_row(['value 3\n\nother line', 'value4\n\n\nvalue5'])
print t.get_string(hrules=ALL)
+------------+-------------+
|  Field 1   |   Field 2   |
+------------+-------------+
|  value 1   |    value2   |
|            | second line |
+------------+-------------+
|  value 3   |    value4   |
|            |             |
| other line |             |
|            |    value5   |
+------------+-------------+
# 测试多种语言的支持情况
x = PrettyTable(["Kanji", "Hiragana", "English"])
x.add_row(["神戸", "こうべ", "Kobe"])
x.add_row(["京都", "きょうと", "Kyoto"])
x.add_row(["長崎", "ながさき", "Nagasaki"])
x.add_row(["名古屋", "なごや", "Nagoya"])
x.add_row(["大阪", "おおさか", "Osaka"])
x.add_row(["札幌", "さっぽろ", "Sapporo"])
x.add_row(["東京", "とうきょう", "Tokyo"])
x.add_row(["横浜", "よこはま", "Yokohama"])
print x
+--------+------------+----------+
| Kanji  |  Hiragana  | English  |
+--------+------------+----------+
|  神戸  |   こうべ   |   Kobe   |
|  京都  |  きょうと  |  Kyoto   |
|  長崎  |  ながさき  | Nagasaki |
| 名古屋 |   なごや   |  Nagoya  |
|  大阪  |  おおさか  |  Osaka   |
|  札幌  |  さっぽろ  | Sapporo  |
|  東京  | とうきょう |  Tokyo   |
|  横浜  |  よこはま  | Yokohama |
+--------+------------+----------+
 

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