CLN: Remove reset_display_options (#56153)

pandas/_testing/__init__.py

@@ -291,13 +291,6 @@
 comparison_dunder_methods = ["__eq__", "__ne__", "__le__", "__lt__", "__ge__", "__gt__"]
 
 
-def reset_display_options() -> None:
-    """
-    Reset the display options for printing and representing objects.
-    """
-    pd.reset_option("^display.", silent=True)
-
-
 # -----------------------------------------------------------------------------
 # Comparators
 
@@ -1174,7 +1167,6 @@ def shares_memory(left, right) -> bool:
     "NULL_OBJECTS",
     "OBJECT_DTYPES",
     "raise_assert_detail",
-    "reset_display_options",
     "raises_chained_assignment_error",
     "round_trip_localpath",
     "round_trip_pathlib",

pandas/tests/frame/test_repr.py

@@ -24,8 +24,6 @@
 )
 import pandas._testing as tm
 
-import pandas.io.formats.format as fmt
-
 
 class TestDataFrameRepr:
     def test_repr_should_return_str(self):
@@ -220,16 +218,14 @@ def test_repr_unsortable(self):
     def test_repr_float_frame_options(self, float_frame):
         repr(float_frame)
 
-        fmt.set_option("display.precision", 3)
-        repr(float_frame)
+        with option_context("display.precision", 3):
+            repr(float_frame)
 
-        fmt.set_option("display.max_rows", 10, "display.max_columns", 2)
-        repr(float_frame)
-
-        fmt.set_option("display.max_rows", 1000, "display.max_columns", 1000)
-        repr(float_frame)
+        with option_context("display.max_rows", 10, "display.max_columns", 2):
+            repr(float_frame)
 
-        tm.reset_display_options()
+        with option_context("display.max_rows", 1000, "display.max_columns", 1000):
+            repr(float_frame)
 
     def test_repr_unicode(self):
         uval = "\u03c3\u03c3\u03c3\u03c3"

pandas/tests/io/formats/test_eng_formatting.py

@@ -1,30 +1,39 @@
 import numpy as np
+import pytest
 
-from pandas import DataFrame
-import pandas._testing as tm
+from pandas import (
+    DataFrame,
+    reset_option,
+    set_eng_float_format,
+)
 
-import pandas.io.formats.format as fmt
+from pandas.io.formats.format import EngFormatter
+
+
+@pytest.fixture(autouse=True)
+def reset_float_format():
+    yield
+    reset_option("display.float_format")
 
 
 class TestEngFormatter:
     def test_eng_float_formatter2(self, float_frame):
         df = float_frame
         df.loc[5] = 0
 
-        fmt.set_eng_float_format()
+        set_eng_float_format()
         repr(df)
 
-        fmt.set_eng_float_format(use_eng_prefix=True)
+        set_eng_float_format(use_eng_prefix=True)
         repr(df)
 
-        fmt.set_eng_float_format(accuracy=0)
+        set_eng_float_format(accuracy=0)
         repr(df)
-        tm.reset_display_options()
 
     def test_eng_float_formatter(self):
         df = DataFrame({"A": [1.41, 141.0, 14100, 1410000.0]})
 
-        fmt.set_eng_float_format()
+        set_eng_float_format()
         result = df.to_string()
         expected = (
             "             A\n"
@@ -35,18 +44,16 @@ def test_eng_float_formatter(self):
         )
         assert result == expected
 
-        fmt.set_eng_float_format(use_eng_prefix=True)
+        set_eng_float_format(use_eng_prefix=True)
         result = df.to_string()
         expected = "         A\n0    1.410\n1  141.000\n2  14.100k\n3   1.410M"
         assert result == expected
 
-        fmt.set_eng_float_format(accuracy=0)
+        set_eng_float_format(accuracy=0)
         result = df.to_string()
         expected = "         A\n0    1E+00\n1  141E+00\n2   14E+03\n3    1E+06"
         assert result == expected
 
-        tm.reset_display_options()
-
     def compare(self, formatter, input, output):
         formatted_input = formatter(input)
         assert formatted_input == output
@@ -67,7 +74,7 @@ def compare_all(self, formatter, in_out):
             self.compare(formatter, -input, "-" + output[1:])
 
     def test_exponents_with_eng_prefix(self):
-        formatter = fmt.EngFormatter(accuracy=3, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=3, use_eng_prefix=True)
         f = np.sqrt(2)
         in_out = [
             (f * 10**-24, " 1.414y"),
@@ -125,7 +132,7 @@ def test_exponents_with_eng_prefix(self):
         self.compare_all(formatter, in_out)
 
     def test_exponents_without_eng_prefix(self):
-        formatter = fmt.EngFormatter(accuracy=4, use_eng_prefix=False)
+        formatter = EngFormatter(accuracy=4, use_eng_prefix=False)
         f = np.pi
         in_out = [
             (f * 10**-24, " 3.1416E-24"),
@@ -183,7 +190,7 @@ def test_exponents_without_eng_prefix(self):
         self.compare_all(formatter, in_out)
 
     def test_rounding(self):
-        formatter = fmt.EngFormatter(accuracy=3, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=3, use_eng_prefix=True)
         in_out = [
             (5.55555, " 5.556"),
             (55.5555, " 55.556"),
@@ -194,7 +201,7 @@ def test_rounding(self):
         ]
         self.compare_all(formatter, in_out)
 
-        formatter = fmt.EngFormatter(accuracy=1, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=1, use_eng_prefix=True)
         in_out = [
             (5.55555, " 5.6"),
             (55.5555, " 55.6"),
@@ -205,7 +212,7 @@ def test_rounding(self):
         ]
         self.compare_all(formatter, in_out)
 
-        formatter = fmt.EngFormatter(accuracy=0, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=0, use_eng_prefix=True)
         in_out = [
             (5.55555, " 6"),
             (55.5555, " 56"),
@@ -216,14 +223,14 @@ def test_rounding(self):
         ]
         self.compare_all(formatter, in_out)
 
-        formatter = fmt.EngFormatter(accuracy=3, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=3, use_eng_prefix=True)
         result = formatter(0)
         assert result == " 0.000"
 
     def test_nan(self):
         # Issue #11981
 
-        formatter = fmt.EngFormatter(accuracy=1, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=1, use_eng_prefix=True)
         result = formatter(np.nan)
         assert result == "NaN"
 
@@ -235,14 +242,13 @@ def test_nan(self):
             }
         )
         pt = df.pivot_table(values="a", index="b", columns="c")
-        fmt.set_eng_float_format(accuracy=1)
+        set_eng_float_format(accuracy=1)
         result = pt.to_string()
         assert "NaN" in result
-        tm.reset_display_options()
 
     def test_inf(self):
         # Issue #11981
 
-        formatter = fmt.EngFormatter(accuracy=1, use_eng_prefix=True)
+        formatter = EngFormatter(accuracy=1, use_eng_prefix=True)
         result = formatter(np.inf)
         assert result == "inf"

pandas/tests/io/formats/test_to_html.py

@@ -914,7 +914,6 @@ def get_ipython():
             repstr = df._repr_html_()
 
         assert "class" in repstr  # info fallback
-        tm.reset_display_options()
 
     def test_repr_html(self, float_frame):
         df = float_frame
@@ -926,16 +925,12 @@ def test_repr_html(self, float_frame):
         with option_context("display.notebook_repr_html", False):
             df._repr_html_()
 
-        tm.reset_display_options()
-
         df = DataFrame([[1, 2], [3, 4]])
         with option_context("display.show_dimensions", True):
             assert "2 rows" in df._repr_html_()
         with option_context("display.show_dimensions", False):
             assert "2 rows" not in df._repr_html_()
 
-        tm.reset_display_options()
-
     def test_repr_html_mathjax(self):
         df = DataFrame([[1, 2], [3, 4]])
         assert "tex2jax_ignore" not in df._repr_html_()

pandas/tests/io/formats/test_to_string.py

@@ -412,7 +412,6 @@ def test_to_string_complex_float_formatting(self):
 
     def test_to_string_format_inf(self):
         # GH#24861
-        tm.reset_display_options()
         df = DataFrame(
             {
                 "A": [-np.inf, np.inf, -1, -2.1234, 3, 4],
@@ -460,7 +459,6 @@ def test_to_string_int_formatting(self):
         assert output == expected
 
     def test_to_string_float_formatting(self):
-        tm.reset_display_options()
         with option_context(
             "display.precision",
             5,
@@ -495,7 +493,6 @@ def test_to_string_float_formatting(self):
             expected = "          x\n0  3234.000\n1     0.253"
             assert df_s == expected
 
-        tm.reset_display_options()
         assert get_option("display.precision") == 6
 
         df = DataFrame({"x": [1e9, 0.2512]})
@@ -516,14 +513,12 @@ def test_to_string_decimal(self):
         assert df.to_string(decimal=",") == expected
 
     def test_to_string_left_justify_cols(self):
-        tm.reset_display_options()
         df = DataFrame({"x": [3234, 0.253]})
         df_s = df.to_string(justify="left")
         expected = "   x       \n0  3234.000\n1     0.253"
         assert df_s == expected
 
     def test_to_string_format_na(self):
-        tm.reset_display_options()
         df = DataFrame(
             {
                 "A": [np.nan, -1, -2.1234, 3, 4],