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Filename : numbers.py
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# These are shared with test_tokenize and other test modules.
#
# Note: since several test cases filter out floats by looking for "e" and ".",
# don't add hexadecimal literals that contain "e" or "E".
VALID_UNDERSCORE_LITERALS = [
    '0_0_0',
    '4_2',
    '1_0000_0000',
    '0b1001_0100',
    '0xffff_ffff',
    '0o5_7_7',
    '1_00_00.5',
    '1_00_00.5e5',
    '1_00_00e5_1',
    '1e1_0',
    '.1_4',
    '.1_4e1',
    '0b_0',
    '0x_f',
    '0o_5',
    '1_00_00j',
    '1_00_00.5j',
    '1_00_00e5_1j',
    '.1_4j',
    '(1_2.5+3_3j)',
    '(.5_6j)',
]
INVALID_UNDERSCORE_LITERALS = [
    # Trailing underscores:
    '0_',
    '42_',
    '1.4j_',
    '0x_',
    '0b1_',
    '0xf_',
    '0o5_',
    '0 if 1_Else 1',
    # Underscores in the base selector:
    '0_b0',
    '0_xf',
    '0_o5',
    # Old-style octal, still disallowed:
    '0_7',
    '09_99',
    # Multiple consecutive underscores:
    '4_______2',
    '0.1__4',
    '0.1__4j',
    '0b1001__0100',
    '0xffff__ffff',
    '0x___',
    '0o5__77',
    '1e1__0',
    '1e1__0j',
    # Underscore right before a dot:
    '1_.4',
    '1_.4j',
    # Underscore right after a dot:
    '1._4',
    '1._4j',
    '._5',
    '._5j',
    # Underscore right after a sign:
    '1.0e+_1',
    '1.0e+_1j',
    # Underscore right before j:
    '1.4_j',
    '1.4e5_j',
    # Underscore right before e:
    '1_e1',
    '1.4_e1',
    '1.4_e1j',
    # Underscore right after e:
    '1e_1',
    '1.4e_1',
    '1.4e_1j',
    # Complex cases with parens:
    '(1+1.5_j_)',
    '(1+1.5_j)',
]