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Original file line numberDiff line numberDiff line change

@@ -5489,15 +5489,15 @@ When an operation would exceed the limit, a :exc:`ValueError` is raised:

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>>> _ = int('2' * 5432)

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Traceback (most recent call last):

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...

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ValueError: Exceeds the limit (4300) for integer string conversion: value has 5432 digits.

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ValueError: Exceeds the limit (4300) for integer string conversion: value has 5432 digits; use sys.set_int_max_str_digits() to increase the limit.

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>>> i = int('2' * 4300)

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>>> len(str(i))

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4300

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>>> i_squared = i*i

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>>> len(str(i_squared))

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Traceback (most recent call last):

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...

5500-

ValueError: Exceeds the limit (4300) for integer string conversion: value has 8599 digits.

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ValueError: Exceeds the limit (4300) for integer string conversion: value has 8599 digits; use sys.set_int_max_str_digits() to increase the limit.

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>>> len(hex(i_squared))

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7144

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>>> assert int(hex(i_squared), base=16) == i*i # Hexadecimal is unlimited.

Original file line numberDiff line numberDiff line change

@@ -0,0 +1,3 @@

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When :exc:`ValueError` is raised if an integer is larger than the limit,

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mention the :func:`sys.set_int_max_str_digits` function in the error message.

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Patch by Victor Stinner.

Original file line numberDiff line numberDiff line change

@@ -36,8 +36,8 @@ medium_value(PyLongObject *x)

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#define IS_SMALL_INT(ival) (-_PY_NSMALLNEGINTS <= (ival) && (ival) < _PY_NSMALLPOSINTS)

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#define IS_SMALL_UINT(ival) ((ival) < _PY_NSMALLPOSINTS)

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#define _MAX_STR_DIGITS_ERROR_FMT_TO_INT "Exceeds the limit (%d) for integer string conversion: value has %zd digits"

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#define _MAX_STR_DIGITS_ERROR_FMT_TO_STR "Exceeds the limit (%d) for integer string conversion"

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#define _MAX_STR_DIGITS_ERROR_FMT_TO_INT "Exceeds the limit (%d) for integer string conversion: value has %zd digits; use sys.set_int_max_str_digits() to increase the limit"

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#define _MAX_STR_DIGITS_ERROR_FMT_TO_STR "Exceeds the limit (%d) for integer string conversion; use sys.set_int_max_str_digits() to increase the limit"

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static inline void

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_Py_DECREF_INT(PyLongObject *op)

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