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bumped version number to 0.0.5, added %E, fixed bool/type capitalization.
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‎CHANGELOG.md‎

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@@ -2,6 +2,12 @@
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All notable changes to the pyprintf project will be documented in this file.
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## [0.0.5] - 2025-04-17
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* Added support for uppercase `E` in scientific notation output for floating-point numbers through the `%E` format specifier (e.g., `1.234500E+02`), alongside the existing lowercase `e` format (`%e`).
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* Updated documentation to clarify that Python booleans are displayed as capitalized strings (`True`/`False`) when converted to strings.
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* Improved type name handling to properly respect Python's standard type name capitalization (e.g., `list`, `dict`, `NoneType`) when using `T` format (`%T`).
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## [0.0.4] - 2025-04-16
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* Removed conflicting line in pyproject.toml - Programming Status :: Python :: 3.11

‎README.md‎

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@@ -146,24 +146,24 @@ These elements can appear in a placeholder in a specific order between the `%` a
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This single character at the end of the placeholder determines how the corresponding argument will be interpreted and formatted.
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| Specifier | Description | Python Example | Output |
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| --------- | ----------------------------------------------------- | ----------------------------------------- | -------------------- |
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| `%%` | Outputs a literal percent sign | `sprintf("%%")` | `%` |
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| `%b` | Integer in binary format | `sprintf("%b", 10)` | `1010` |
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| `%c` | Integer as Unicode character | `sprintf("%c", 65)` | `A` |
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| `%d`/`%i` | Signed decimal integer | `sprintf("%d", 123)` | `123` |
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| `%e` | Floating point in scientific notation (lowercase "e") | `sprintf("%e", 123.45)` | `1.234500e+02` |
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| `%u` | Unsigned decimal integer (32-bit wrap) | `sprintf("%u", -5)` | `4294967291` |
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| `%f` | Floating point with decimal precision | `sprintf("%.2f", 3.14159)` | `3.14` |
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| `%g` | Adaptive float formatting | `sprintf("%.3g", 1234.56)` | `1.23e+03` |
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| `%o` | Integer in octal format | `sprintf("%o", 10)` | `12` |
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| `%s` | String output | `sprintf("%s", "hello")` | `hello` |
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| `%t` | Boolean (`"true"`/`"false"` lowercase strings) | `sprintf("%t", True)` | `true` |
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| `%T` | Python type name | `sprintf("%T", [])` | `list` |
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| `%v` | Primitive value representation | `sprintf("%v", 5)` | `5` |
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| `%x` | Integer in lowercase hexadecimal | `sprintf("%x", 255)` | `ff` |
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| `%X` | Integer in uppercase hexadecimal | `sprintf("%X", 255)` | `FF` |
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| `%j` | Python object in JSON format | `sprintf("%j", {"a": 1})` | `{"a": 1}` |
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| Specifier | Description | Python Example | Output |
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| --------- | ------------------------------------------------------------ | ----------------------------------------- | -------------------- |
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| `%%` | Outputs a literal percent sign | `sprintf("%%")` | `%` |
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| `b` | Integer in binary format | `sprintf("%b", 10)` | `1010` |
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| `c` | Integer as Unicode character | `sprintf("%c", 65)` | `A` |
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| `d`/`i` | Signed decimal integer | `sprintf("%d", 123)` | `123` |
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| `e` | Floating point in scientific notation (lowercase "e") | `sprintf("%e", 123.45)` | `1.234500e+02` |
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| `E` | Floating point in scientific notation (uppercase "E") | `sprintf("%E", 123.45)` | `1.234500E+02` |
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| `f` | Floating point with decimal precision | `sprintf("%.2f", 3.14159)` | `3.14` |
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| `g` | Adaptive float formatting | `sprintf("%.3g", 1234.56)` | `1.23e+03` |
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| `o` | Integer in octal format | `sprintf("%o", 10)` | `12` |
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| `s` | String output | `sprintf("%s", "hello")` | `hello` |
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| `t` | Boolean (`"True"`/`"False"` capitalized strings) | `sprintf("%t", True)` | `True` |
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| `T` | Python type name (`"List"`/`"NoneType"` capitalized strings) | `sprintf("%T", [])` | `List` |
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| `u` | Unsigned decimal integer (32-bit wrap) | `sprintf("%u", -5)` | `4294967291` |
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| `x` | Integer in lowercase hexadecimal | `sprintf("%x", 255)` | `ff` |
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| `X` | Integer in uppercase hexadecimal | `sprintf("%X", 255)` | `FF` |
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| `j` | Python object in JSON format | `sprintf("%j", {"a": 1})` | `{"a": 1}` |
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## Features
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‎pyproject.toml‎

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@@ -36,7 +36,7 @@ maintainers = [
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name = "pyprintf"
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readme = "README.md"
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requires-python = ">=3.10"
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version = "0.0.4"
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version = "0.0.5"
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[project.urls]
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"Bug Tracker" = "https://github.com/playfulsparkle/pyprintf/issues"

‎src/pyprintf/__init__.py‎

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from .core import sprintf, vsprintf, config
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__all__ = ["sprintf", "vsprintf", "config"]
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__version__ = "0.0.4"
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__version__ = "0.0.5"

‎src/pyprintf/core.py‎

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@@ -531,9 +531,9 @@ def sprintf_format(
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try:
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arg = json.dumps(arg, indent=indent if not indent else None)
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except:
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arg = "null"
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arg = "None"
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elif placeholder.type == "e": # Exponential notation
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elif placeholder.type in ("e", "E"):
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try:
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if placeholder.precision:
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try:
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# Regular scientific notation with precision
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arg = f"{float_val:.{precision}e}"
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arg = arg.upper() if placeholder.type == "E" else arg
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except (ValueError, TypeError):
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arg = "0.000000e+00"
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arg = arg[: int(placeholder.precision)]
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elif placeholder.type == "t":
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arg = str(arg).lower()
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arg = str(arg).capitalize()
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match arg:
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case "0" | "":
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arg = "false"
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arg = "False"
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case "1":
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arg = "true"
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arg = "True"
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if placeholder.precision:
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arg = arg[: int(placeholder.precision)]
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elif placeholder.type == "T":
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arg = type(arg).__name__.lower() if arg is not None else "nonetype"
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arg = type(arg).__name__.lower() if arg is not None else "NoneType"
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if placeholder.precision:
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arg = arg[: int(placeholder.precision)]
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if not hex_str: # Handle zero case
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hex_str = "0"
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hex_str: str = hex_str.upper() if placeholder.type == "X" else hex_str
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arg = hex_str
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arg: str = hex_str.upper() if placeholder.type == "X" else hex_str
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except (ValueError, TypeError):
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arg = "0"
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‎tests/test_sprintf.py‎

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@@ -108,33 +108,33 @@ def test_format_named_and_positional_index_arguments(self):
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class TestPlaceholderBoolean:
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def test_format_true_as_true(self):
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assert sprintf("%t", True) == "true"
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assert sprintf("%t", True) == "True"
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def test_format_true_as_t_with_precision_1(self):
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assert sprintf("%.1t", True) == "t"
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assert sprintf("%.1t", True) == "T"
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def test_format_the_string_true_as_true(self):
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assert sprintf("%t", "True") == "true"
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assert sprintf("%t", "True") == "True"
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def test_format_the_number_1_as_true(self):
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assert sprintf("%t", 1) == "true"
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assert sprintf("%t", 1) == "True"
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def test_format_false_as_false(self):
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assert sprintf("%t", False) == "false"
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assert sprintf("%t", False) == "False"
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def test_format_false_as_f_with_precision_1(self):
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assert sprintf("%.1t", False) == "f"
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assert sprintf("%.1t", False) == "F"
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def test_format_an_empty_string_as_false(self):
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assert sprintf("%t", "") == "false"
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assert sprintf("%t", "") == "False"
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def test_format_the_number_0_as_false(self):
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assert sprintf("%t", "") == "false"
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assert sprintf("%t", "") == "False"
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class TestPlaceholderType:
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def test_format_none_as_nonetype(self):
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assert sprintf("%T", None) == "nonetype"
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assert sprintf("%T", None) == "NoneType"
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def test_format_a_boolean_as_boolean(self):
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assert sprintf("%T", True) == "bool"

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