Escaped Unicode string not parsed correctly

[zacmar]

trafficstars

Consider

u = f'\N{GREEK CAPITAL LETTER DELTA}'

which is a ascii-only way to get the unicode-glyph with the name in between { and }. Parse Tree:

expression_statement [0, 0] - [0, 37]
  assignment [0, 0] - [0, 37]
    left: identifier [0, 0] - [0, 1]
    right: string [0, 4] - [0, 37]
      interpolation [0, 8] - [0, 36]
        ERROR [0, 9] - [0, 29]
          identifier [0, 9] - [0, 14]
          identifier [0, 15] - [0, 22]
          identifier [0, 23] - [0, 29]
        identifier [0, 30] - [0, 35]

[ThatXliner]

Does it error without the "f" (making it not an f-string)?

[zacmar]

No it does not; the issue report is very sloppily written, I'm sorry.

u = '\N{GREEK CAPITAL LETTER DELTA}'

Parse Tree:

expression_statement [0, 0] - [0, 36]
  assignment [0, 0] - [0, 36]
    left: identifier [0, 0] - [0, 1]
    right: string [0, 4] - [0, 36]

However, there are many situations where one may want to combine f-strings with the unicode specification, for instance to get 0️⃣ ... 9️⃣, one may use

number_emojis = [f"{num}\N{COMBINING ENCLOSING KEYCAP}" for num in range(10)]

Parse Tree:

expression_statement [0, 0] - [0, 77]
  assignment [0, 0] - [0, 77]
    left: identifier [0, 0] - [0, 13]
    right: list_comprehension [0, 16] - [0, 77]
      body: string [0, 17] - [0, 55]
        interpolation [0, 19] - [0, 24]
          identifier [0, 20] - [0, 23]
        interpolation [0, 26] - [0, 54]
          identifier [0, 27] - [0, 36]
          ERROR [0, 37] - [0, 53]
            identifier [0, 37] - [0, 46]
            identifier [0, 47] - [0, 53]
      for_in_clause [0, 56] - [0, 76]
        left: identifier [0, 60] - [0, 63]
        right: call [0, 67] - [0, 76]
          function: identifier [0, 67] - [0, 72]
          arguments: argument_list [0, 72] - [0, 76]
            integer [0, 73] - [0, 75]