Unicode Character Database (UCD) is defined by Unicode Standard Annex #44 which defines the character properties for all unicode characters. This module provides access to UCD and uses the same symbols and names as defined by the Unicode Character Database.
Functions defined by the module :
- unicodedata.lookup(name)
This function looks up for the character by name. If a character with the given name is found in the database, then, the corresponding character is returned otherwise Keyerror is raised.
Example :
import
unicodedata
print
unicodedata.lookup(
'LEFT CURLY BRACKET'
)
print
unicodedata.lookup(
'RIGHT CURLY BRACKET'
)
print
unicodedata.lookup(
'ASTERISK'
)
# gives error as there is
# no symbol called ASTER
# print unicodedata.lookup('ASTER')
Output :
{ } *
- unicodedata.name(chr[, default])
This function returns the name assigned to the given character as a string. If no name is defined, default is returned by the function otherwise ValueError is raised if name is not given.Example :
import
unicodedata
print
unicodedata.name(u
'/'
)
print
unicodedata.name(u
'|'
)
print
unicodedata.name(u
':'
)
Output :
SOLIDUS VERTICAL LINE COLON
- unicodedata.decimal(chr[, default])
This function returns the decimal value assigned to the given character as integer. If no value is defined, default is returned by the function otherwise ValueError is raised if value is not given.Example :
import
unicodedata
print
unicodedata.decimal(u
'9'
)
print
unicodedata.decimal(u
'a'
)
Output :
9 Traceback (most recent call last): File "7e736755dd176cd0169eeea6f5d32057.py", line 4, in print unicodedata.decimal(u'a') ValueError: not a decimal
- unicodedata.digit(chr[, default])
This function returns the digit value assigned to the given character as integer. If no value is defined, default is returned by the function otherwise ValueError is raised if value is not given.Example :
import
unicodedata
print
unicodedata.decimal(u
'9'
)
print
unicodedata.decimal(u
'143'
)
Output :
9 Traceback (most recent call last): File "ad47ae996380a777426cc1431ec4a8cd.py", line 4, in print unicodedata.decimal(u'143') TypeError: need a single Unicode character as parameter
- unicodedata.numeric(chr[, default])
This function returns the numeric value assigned to the given character as integer. If no value is defined, default is returned by the function otherwise ValueError is raised if value is not given.
Example :
import
unicodedata
print
unicodedata.decimal(u
'9'
)
print
unicodedata.decimal(u
'143'
)
Output :
9 Traceback (most recent call last): File "ad47ae996380a777426cc1431ec4a8cd.py", line 4, in print unicodedata.decimal(u'143') TypeError: need a single Unicode character as parameter
- unicodedata.category(chr)
This function returns the general category assigned to the given character as string. For example, it returns ‘L’ for letter and ‘u’ for uppercase.Example :
import
unicodedata
print
unicodedata.category(u
'A'
)
print
unicodedata.category(u
'b'
)
Output :
Lu Ll
- unicodedata.bidirectional(chr)
This function returns the bidirectional class assigned to the given character as string. For example, it returns ‘A’ for arabic and ‘N’ for number. An empty string is returned by this function if no such value is defined.Example :
import
unicodedata
print
unicodedata.bidirectional(u
'u0660'
)
Output :
AN
- unicodedata.normalize(form, unistr)
This function returns the normal form form for the Unicode string unistr. Valid values for form are ‘NFC’, ‘NFKC’, ‘NFD’, and ‘NFKD’.Example :
from
unicodedata
import
normalize
print
'%r'
%
normalize(
'NFD'
, u
'u00C7'
)
print
'%r'
%
normalize(
'NFC'
, u
'Cu0327'
)
print
'%r'
%
normalize(
'NFKD'
, u
'u2460'
)
Output :
u'Cu0327' u'xc7' u'1'
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