regex101: Python Match Workspace

Group number_capture(?P<number_capture>(?P<pre1>(?<![^0-9,.+-])|)(?P<number>(?P<sign_symbol_opt1>(?<![0-9])[+-])?(?P<whole_number_w_thous_sep>(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)|(?P<whole_number_w_o_thous_sep>\d+))(?P<decimal_separator_1>[.])?(?P<fractional_w_whole_before>(?<=[.])(?P<digits_after_decimal_sep_1>\d+))?(?P<post1>(?<![^0-9,.+-])|)|(?P<pre2>(?<![^0-9,.+-])|)(?P<fractional_without_whole_before>(?P<sign_symbol_opt2>(?<![0-9])[+-])?(?P<decimal_separator_2>[.])(?P<digits_after_decimal_sep_2>\d+)))(?P<post2>(?<![^0-9,.+-])|))

Group pre1(?P<pre1>(?<![^0-9,.+-])|)

1st Alternative(?<![^0-9,.+-])

Negative Lookbehind(?<![^0-9,.+-])

Negated Character Class[^0-9,.+-]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative — matches an empty string

Group number(?P<number>(?P<sign_symbol_opt1>(?<![0-9])[+-])?(?P<whole_number_w_thous_sep>(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)|(?P<whole_number_w_o_thous_sep>\d+))(?P<decimal_separator_1>[.])?(?P<fractional_w_whole_before>(?<=[.])(?P<digits_after_decimal_sep_1>\d+))?(?P<post1>(?<![^0-9,.+-])|)|(?P<pre2>(?<![^0-9,.+-])|)(?P<fractional_without_whole_before>(?P<sign_symbol_opt2>(?<![0-9])[+-])?(?P<decimal_separator_2>[.])(?P<digits_after_decimal_sep_2>\d+)))

1st Alternative(?P<sign_symbol_opt1>(?<![0-9])[+-])?(?P<whole_number_w_thous_sep>(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)|(?P<whole_number_w_o_thous_sep>\d+))(?P<decimal_separator_1>[.])?(?P<fractional_w_whole_before>(?<=[.])(?P<digits_after_decimal_sep_1>\d+))?(?P<post1>(?<![^0-9,.+-])|)

Group sign_symbol_opt1(?P<sign_symbol_opt1>(?<![0-9])[+-])?

?repeats the group contents below at most once:

Negative Lookbehind(?<![0-9])

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[+-]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group whole_number_w_thous_sep(?P<whole_number_w_thous_sep>(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)|(?P<whole_number_w_o_thous_sep>\d+))

1st Alternative(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)

Group first_group(?P<first_group>\d{1,3})

\d{1,3}a Unicode decimal digit, repeated between 1 and 3 times

Group thousands_separator(?P<thousands_separator>[ ,])

Character Class[ ,]

the literal (32₁₀ / 40₈ / 20₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group three_digits_w_sep(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*

*repeats the group contents below any number of times:

Group three_digits(?P<three_digits>\d{3})

\d{3}a Unicode decimal digit, repeated exactly 3 times

(?P=thousands_separator)the text saved by group thousands_separator

Group last_group_of_three(?P<last_group_of_three>\d{3})

\d{3}a Unicode decimal digit, repeated exactly 3 times

Negative Lookahead(?!\d)

\da Unicode decimal digit

2nd Alternative(?P<whole_number_w_o_thous_sep>\d+)

Group whole_number_w_o_thous_sep(?P<whole_number_w_o_thous_sep>\d+)

\d+a Unicode decimal digit, repeated at least once

Group decimal_separator_1(?P<decimal_separator_1>[.])?

?repeats the group contents below at most once:

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group fractional_w_whole_before(?P<fractional_w_whole_before>(?<=[.])(?P<digits_after_decimal_sep_1>\d+))?

?repeats the group contents below at most once:

Positive Lookbehind(?<=[.])

Group digits_after_decimal_sep_1(?P<digits_after_decimal_sep_1>\d+)

Group post1(?P<post1>(?<![^0-9,.+-])|)

2nd Alternative(?P<pre2>(?<![^0-9,.+-])|)(?P<fractional_without_whole_before>(?P<sign_symbol_opt2>(?<![0-9])[+-])?(?P<decimal_separator_2>[.])(?P<digits_after_decimal_sep_2>\d+))

Group post2(?P<post2>(?<![^0-9,.+-])|)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

(?P<number_capture>(?P<pre1>(?<![^0-9,.+-])|)(?P<number>(?P<sign_symbol_opt1>(?<![0-9])[+-])?(?P<whole_number_w_thous_sep>(?P<first_group>\d{1,3})(?P<thousands_separator>[ ,])(?P<three_digits_w_sep>(?P<three_digits>\d{3})(?P=thousands_separator))*(?P<last_group_of_three>\d{3})(?!\d)|(?P<whole_number_w_o_thous_sep>\d+))(?P<decimal_separator_1>[.])?(?P<fractional_w_whole_before>(?<=[.])(?P<digits_after_decimal_sep_1>\d+))?(?P<post1>(?<![^0-9,.+-])|)|(?P<pre2>(?<![^0-9,.+-])|)(?P<fractional_without_whole_before>(?P<sign_symbol_opt2>(?<![0-9])[+-])?(?P<decimal_separator_2>[.])(?P<digits_after_decimal_sep_2>\d+)))(?P<post2>(?<![^0-9,.+-])|))

New

129.0.0.1
3427132435331334442334411
5
3,429
-24
+373,243,555.001

88,23,45,22,256
2 524 135 634 555 243
.832554342356
0000005.3145
128
4,128,42,3,18322,9,0.3,238023,234,2,341,352,22     
3,523,136,453,462,734,834,756.0000/324,523,000,321,999.7
129.0.0.1
0.81937
22 418 524 013 523.8
22 341.123 423 512 891
342 . 7094253434.23444354
.
555-555-5555
27+4 325/7
137.035999173

132 23,54633332345325432

217.
+.32 5-.84133 -.5
+0.5
-0.3

Regular Expressions 101

Regular Expression

Substitution