Python stringprep Library in_table_c5 in_table_c6 and in_table_c7 functions














































Python stringprep Library in_table_c5 in_table_c6 and in_table_c7 functions



Python stringprep Library

Stringprep describes a framework for preparing Unicode text strings in order to increase the possibility that string input and string comparison work in ways that make sense for typical users throughout the world.

Some functions of stringprep discussed here are as follows:

1. stringprep.in_table_c5(code)
2. stringprep.in_table_c6(code)
3. stringprep.in_table_c7(code)

1. stringprep.in_table_c5(code)

This function in python stringprep library returns "True" or "False" depending on whether the given Unicode code point passed as argument is listed in the Table C.5.
This Table C.5 contains the Surrogate characters.

Surrogate  characters are code points from two special ranges of Unicode values reserved for use as the leading and trailing values of paired code units in UTF-16.
Surrogate characters have some special values and are typically referred to as surrogate pairs. They are the combination of two characters, containing a single code point. The range of first Unicode code point is U+D800 to U+D8FF (called high surrogates) and the range of the second Unicode code point is U+DC00 to U+DCFF (called low surrogates). When programs see a bit sequence that falls in this range, they immediately know that they have encountered a surrogate pair. That's why they are called surrogates because they do not represent characters directly, but only as a pair.

To view the table visit: https://datatracker.ietf.org/doc/html/rfc3454#appendix-C.5



2. stringprep.in_table_c6(code):

This function in python stringprep library returns "True" or "False" depending on whether the given Unicode code point passed as argument is listed in the Table C.6.
This Table C.6 contains the codes inappropriate for plaintext.
This table contains 5 entries in total that contains characters that are inappropriate for plaintext usage.

To view the table visit: https://datatracker.ietf.org/doc/html/rfc3454#appendix-C.6



3. stringprep.in_table_c7(code):

This function in python stringprep library returns "True" or "False" depending on whether the given Unicode code point passed as argument is listed in the Table C.7.
This Table C.7 contains the codes inappropriate for canonical representation.
Canonical representation is a form of representation such that every object has unique representation(canonical being the process through which representation is put into its canonical form). Thus the equality of two objects can easily be tested by testing the equality of their canonical forms.
The Table C.7 contains entries that range from U+2FF0 to U+2FFB that are inappropriate for canonical representation i.e. can't be represented in any canonical forms.

To view the table visit: https://datatracker.ietf.org/doc/html/rfc3454#appendix-C.7




More Articles of Arkaja Sharan:

Name Views Likes
Python codecs Library Error Handling schemes module functions 77 0
Python codecs Library Error Handler register_error and lookup_error functions 71 0
Python codecs Library Error Handlers 77 0
Python codecs Library open and EncodedFile functions 66 0
Python codecs Library iterencode and iterdecode functions 85 0
Python codecs Library register and unregister functions 67 0
Python codecs Library getreader and getwriter functions 79 0
Python codecs Library getincrementalencoder and getincrementaldecoder 65 0
Python codecs Library getencoder and getdecoder functions 70 0
Python Introduction to codecs Library 100 0
Python fcntl Library flock and lockf functions 78 0
Python fcntl Library fcntl and ioctl functions 90 0
Python Resource Library resource usage functions 90 0
Python Resource Library resource usage symbolic constants 73 0
Python Resource Library Resource Limit Functions 87 0
Python resource library resource limit symbolic constants 80 0
Python Introduction to Resource Library 70 0
Python stringprep Library in_table_d1 and in_table_d2 functions 78 0
Python stringprep Library in_table_c8 and in_table_c9 functions 81 0
Python stringprep Library in_table_c5 in_table_c6 and in_table_c7 functions 70 0
Python stringprep Library in_table_c3 and in_table_c4 functions 75 0
Python stringprep library in_table_c21 in_table_c22 and in_table_c21_c22 77 0
Python stringprep library functions in_table_c11 in_table_c12 and in_table_c11_c12 78 0
Python Introduction to stringprep Library 79 0
Python unicodedata library is_normalized unidata_version and ucd_3_2_0 75 0
Python Unicodedata Library functions normalize and decomposition 130 0
Python Unicodedata Library functions east_asian_width and mirrored 82 1
Python Unicodedata Library category bidirectional and combining functions 114 0
Introduction to Unicodedata library lookup and name functions 79 0
Unicode Library decimal digit and numeric functions 82 0
Introduction to Unicode Data library 0 0

Comments