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80 changes: 80 additions & 0 deletions Lib/test/support/numbers.py
Original file line number Diff line number Diff line change
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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)',
]
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