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⚡️ Speed up method Tooltips._pseudo_css by 34% #386

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⚡️ Speed up method Tooltips._pseudo_css by 34% #386

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29 changes: 15 additions & 14 deletions pandas/io/formats/style_render.py
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,11 @@ class StylerRenderer:
Base class to process rendering a Styler with a specified jinja2 template.
"""

loader = jinja2.PackageLoader("pandas", "io/formats/templates")
import os

loader = jinja2.FileSystemLoader(
os.path.join(os.path.dirname(__file__), "templates")
)
env = jinja2.Environment(loader=loader, trim_blocks=True)
template_html = env.get_template("html.tpl")
template_html_table = env.get_template("html_table.tpl")
Expand Down Expand Up @@ -834,10 +838,7 @@ def _generate_body_row(

data_element = _element(
"td",
(
f"{self.css['data']} {self.css['row']}{r} "
f"{self.css['col']}{c}{cls}"
),
(f"{self.css['data']} {self.css['row']}{r} {self.css['col']}{c}{cls}"),
value,
data_element_visible,
attributes="",
Expand Down Expand Up @@ -956,7 +957,7 @@ def concatenated_visible_rows(obj):
idx_len = d["index_lengths"].get((lvl, r), None)
if idx_len is not None: # i.e. not a sparsified entry
d["clines"][rn + idx_len].append(
f"\\cline{{{lvln+1}-{len(visible_index_levels)+data_len}}}"
f"\\cline{{{lvln + 1}-{len(visible_index_levels) + data_len}}}"
)

def format(
Expand Down Expand Up @@ -1211,7 +1212,7 @@ def format(
data = self.data.loc[subset]

if not isinstance(formatter, dict):
formatter = {col: formatter for col in data.columns}
formatter = dict.fromkeys(data.columns, formatter)

cis = self.columns.get_indexer_for(data.columns)
ris = self.index.get_indexer_for(data.index)
Expand Down Expand Up @@ -1397,7 +1398,7 @@ def format_index(
return self # clear the formatter / revert to default and avoid looping

if not isinstance(formatter, dict):
formatter = {level: formatter for level in levels_}
formatter = dict.fromkeys(levels_, formatter)
else:
formatter = {
obj._get_level_number(level): formatter_
Expand Down Expand Up @@ -1540,7 +1541,7 @@ def relabel_index(

>>> df = pd.DataFrame({"samples": np.random.rand(10)})
>>> styler = df.loc[np.random.randint(0, 10, 3)].style
>>> styler.relabel_index([f"sample{i+1} ({{}})" for i in range(3)])
>>> styler.relabel_index([f"sample{i + 1} ({{}})" for i in range(3)])
... # doctest: +SKIP
samples
sample1 (5) 0.315811
Expand Down Expand Up @@ -1694,7 +1695,7 @@ def format_index_names(
return self # clear the formatter / revert to default and avoid looping

if not isinstance(formatter, dict):
formatter = {level: formatter for level in levels_}
formatter = dict.fromkeys(levels_, formatter)
else:
formatter = {
obj._get_level_number(level): formatter_
Expand Down Expand Up @@ -2226,14 +2227,14 @@ def _pseudo_css(
-------
pseudo_css : List
"""
selector_id = "#T_" + uuid + "_row" + str(row) + "_col" + str(col)
base_selector = f"#T_{uuid}_row{row}_col{col}"
return [
{
"selector": selector_id + f":hover .{name}",
"selector": f"{base_selector}:hover .{name}",
"props": [("visibility", "visible")],
},
{
"selector": selector_id + f" .{name}::after",
"selector": f"{base_selector} .{name}::after",
"props": [("content", f'"{text}"')],
},
]
Expand Down Expand Up @@ -2503,7 +2504,7 @@ def color(value, user_arg, command, comm_arg):
if value[0] == "#" and len(value) == 7: # color is hex code
return command, f"[HTML]{{{value[1:].upper()}}}{arg}"
if value[0] == "#" and len(value) == 4: # color is short hex code
val = f"{value[1].upper()*2}{value[2].upper()*2}{value[3].upper()*2}"
val = f"{value[1].upper() * 2}{value[2].upper() * 2}{value[3].upper() * 2}"
return command, f"[HTML]{{{val}}}{arg}"
elif value[:3] == "rgb": # color is rgb or rgba
r = re.findall("(?<=\\()[0-9\\s%]+(?=,)", value)[0].strip()
Expand Down