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: / opt / gsutil / third_party / pyparsing / examples /
Filename : numerics.py
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#
# numerics.py
#
# Examples of parsing real and integers using various grouping and
# decimal point characters, varying by locale.
#
# Copyright 2016, Paul McGuire
#
# Format samples from https://docs.oracle.com/cd/E19455-01/806-0169/overview-9/index.html
#
tests = """\
# Canadian (English and French)
4 294 967 295,000

# Danish
4 294 967 295,000

# Finnish
4 294 967 295,000

# French
4 294 967 295,000

# German
4 294 967 295,000

# Italian
4.294.967.295,000

# Norwegian
4.294.967.295,000

# Spanish
4.294.967.295,000

# Swedish
4 294 967 295,000

# GB-English
4,294,967,295.000

# US-English
4,294,967,295.000

# Thai
4,294,967,295.000
"""

from pyparsing import Regex

comma_decimal = Regex(r"\d{1,2}(([ .])\d\d\d(\2\d\d\d)*)?,\d*")
comma_decimal.add_parse_action(
    lambda t: float(t[0].replace(" ", "").replace(".", "").replace(",", "."))
)

dot_decimal = Regex(r"\d{1,2}(([ ,])\d\d\d(\2\d\d\d)*)?\.\d*")
dot_decimal.add_parse_action(lambda t: float(t[0].replace(" ", "").replace(",", "")))

decimal = comma_decimal ^ dot_decimal
decimal.run_tests(tests, parse_all=True)

grouped_integer = Regex(r"\d{1,2}(([ .,])\d\d\d(\2\d\d\d)*)?")
grouped_integer.add_parse_action(
    lambda t: int(t[0].replace(" ", "").replace(",", "").replace(".", ""))
)
grouped_integer.run_tests(tests, parse_all=False)