To convert from Japanese number notation to numerical string or value:

Japanese number notation can include Kansuji. The string １つの価格が二兆30万五千十7円になります。 will be converted to two integers, 1 and 2000000005017. And also, 打率は三割二部五厘です。 will be a float 0.325.

value:

The return value is a converted str. If the input string has no number notation, value returns the input str.

values:

The return value is a list of result objects. If the input string has no number notation, suji returns a empty list. The result object has three keys: val, beg, and end:

val:

the numerical value of the number notation.

beg:

the start postion of the found number notation at the input string.

end:

the end postion of the found number notation.

To convert from numeric notation to Japanese Kanji notation:

The string 二兆30万五千十7円になります。 will be converted to the Kansuji string, 二兆三十万五千十七. The boolean flag one is interpreted as whether to display the first character 一 or not. The output of suji.kansuji(‘1000万’) will be converted to 一千万 (as default), and the output of suji.kansuji(‘1000万’, False) will be converted to 千万. Note that suji does not support numerical notation after the decimal point. If the inpust string is 32.01, the output will 三十二, not 三十二割一厘.

kansuji:

The retun value is a covnerted str. If the input string has no number notation, kansuji returns the input str.

kansujis:

The return value is a list of result objects. If the input string has no number notation, kansujis returns a empty list. The result object has three keys: val, beg, and end:

val:

the Kansuji notation string

beg:

the start postion of the found number notation at the input string.

end:

the end postion of the found number notation.

suji is a one-pass parser. That is, suji parse a source text from the head to the end only once. This library is pure Python code with no dependencies.

Installation:

$ pip install suji

Usage:

>>> import suji

>>> suji.value('１つの価格が二兆30万五千十7円になります。')
1つの価格が2000000305017円になります。
>>> suji.value('一千万です。')
10000000です。
>>> suji.value('こんにちは')
こんにちは

>>> suji.values('１つの価格が二兆30万五千十7円になります。')
[{'val': 1, 'beg': 0, 'end': 1}, {'val': 2000000305017, 'beg': 6, 'end': 15}]
>>> suji.values('打率は三割二分五厘です。')
[{'val': 0.32500000000000007, 'beg': 3, 'end': 9}]
>>> suji.values('こんにちは')
[]

>>> suji.kansuji('価格は￥10,000,056です。')
価格は￥一千万五十六です
>>> suji.kansuji('価格は￥10,000,056です。', False)
価格は￥千万五十六です
>>> suji.kansuji('こんにちは')
こんにちは

>>> suji.kansujis('価格は￥10,000,056です。')
[{'val': '一千万五十六', 'beg': 4, 'end': 14}]
>>> suji.kansujis('価格は￥10,000,056です。', False)
[{'val': '千万五十六', 'beg': 4, 'end': 14}]
>>> suji.kansujis('こんにちは')
[]