switching to high quality piper tts and added label translations

2026-01-29 23:48:19 +01:00
commit d80c619df9
3934 changed files with 1451600 additions and 0 deletions
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+"""
+A few practical conventions common to all printers.
+"""
+
+import re
+
+from collections.abc import Iterable
+from sympy.core.function import Derivative
+
+_name_with_digits_p = re.compile(r'^([^\W\d_]+)(\d+)$', re.UNICODE)
+
+
+def split_super_sub(text):
+    """Split a symbol name into a name, superscripts and subscripts
+
+    The first part of the symbol name is considered to be its actual
+    'name', followed by super- and subscripts. Each superscript is
+    preceded with a "^" character or by "__". Each subscript is preceded
+    by a "_" character.  The three return values are the actual name, a
+    list with superscripts and a list with subscripts.
+
+    Examples
+    ========
+
+    >>> from sympy.printing.conventions import split_super_sub
+    >>> split_super_sub('a_x^1')
+    ('a', ['1'], ['x'])
+    >>> split_super_sub('var_sub1__sup_sub2')
+    ('var', ['sup'], ['sub1', 'sub2'])
+
+    """
+    if not text:
+        return text, [], []
+
+    pos = 0
+    name = None
+    supers = []
+    subs = []
+    while pos < len(text):
+        start = pos + 1
+        if text[pos:pos + 2] == "__":
+            start += 1
+        pos_hat = text.find("^", start)
+        if pos_hat < 0:
+            pos_hat = len(text)
+        pos_usc = text.find("_", start)
+        if pos_usc < 0:
+            pos_usc = len(text)
+        pos_next = min(pos_hat, pos_usc)
+        part = text[pos:pos_next]
+        pos = pos_next
+        if name is None:
+            name = part
+        elif part.startswith("^"):
+            supers.append(part[1:])
+        elif part.startswith("__"):
+            supers.append(part[2:])
+        elif part.startswith("_"):
+            subs.append(part[1:])
+        else:
+            raise RuntimeError("This should never happen.")
+
+    # Make a little exception when a name ends with digits, i.e. treat them
+    # as a subscript too.
+    m = _name_with_digits_p.match(name)
+    if m:
+        name, sub = m.groups()
+        subs.insert(0, sub)
+
+    return name, supers, subs
+
+
+def requires_partial(expr):
+    """Return whether a partial derivative symbol is required for printing
+
+    This requires checking how many free variables there are,
+    filtering out the ones that are integers. Some expressions do not have
+    free variables. In that case, check its variable list explicitly to
+    get the context of the expression.
+    """
+
+    if isinstance(expr, Derivative):
+        return requires_partial(expr.expr)
+
+    if not isinstance(expr.free_symbols, Iterable):
+        return len(set(expr.variables)) > 1
+
+    return sum(not s.is_integer for s in expr.free_symbols) > 1