Merge pull request matplotlib#26073 from timhoffm/locator-example

Cleanup date tick locators and formatters

Author: ksunden

galleries/examples/ticks/date_formatters_locators.py

@@ -19,31 +19,30 @@
 import matplotlib.ticker as ticker
 
 locators = [
+    # locator as str, xmax, fmt
     ('AutoDateLocator(maxticks=8)', '2003-02-01', '%Y-%m'),
     ('YearLocator(month=4)', '2003-02-01', '%Y-%m'),
-    ('MonthLocator(bymonth=[4,8,12])', '2003-02-01', '%Y-%m'),
+    ('MonthLocator(bymonth=[4, 8, 12])', '2003-02-01', '%Y-%m'),
     ('DayLocator(interval=180)', '2003-02-01', '%Y-%m-%d'),
     ('WeekdayLocator(byweekday=SU, interval=4)', '2000-07-01', '%a %Y-%m-%d'),
-    ('HourLocator(byhour=range(0,24,6))', '2000-02-04', '%H h'),
+    ('HourLocator(byhour=range(0, 24, 6))', '2000-02-04', '%H h'),
     ('MinuteLocator(interval=15)', '2000-02-01 02:00', '%H:%M'),
-    ('SecondLocator(bysecond=(0,30))', '2000-02-01 00:02', '%H:%M:%S'),
+    ('SecondLocator(bysecond=(0, 30))', '2000-02-01 00:02', '%H:%M:%S'),
     ('MicrosecondLocator(interval=1000)', '2000-02-01 00:00:00.005', '%S.%f'),
-    ('RRuleLocator(rrulewrapper(freq=MONTHLY, \nbyweekday=(MO, TU, WE, TH,' +
-     ' FR), bysetpos=-1))', '2000-07-01', '%Y-%m-%d')
+    ('RRuleLocator(rrulewrapper(freq=MONTHLY, \nbyweekday=(MO, TU, WE, TH, FR), '
+     'bysetpos=-1))', '2000-07-01', '%Y-%m-%d'),
 ]
 
 formatters = [
-    ('AutoDateFormatter(ax.xaxis.get_major_locator())'),
-    ('ConciseDateFormatter(ax.xaxis.get_major_locator())'),
-    ('DateFormatter("%b %Y")')
+    'AutoDateFormatter(ax.xaxis.get_major_locator())',
+    'ConciseDateFormatter(ax.xaxis.get_major_locator())',
+    'DateFormatter("%b %Y")',
 ]
 
 
 def plot_axis(ax, locator=None, xmax='2002-02-01', fmt=None, formatter=None):
     """Set up common parameters for the Axes in the example."""
-    ax.spines.right.set_visible(False)
-    ax.spines.left.set_visible(False)
-    ax.spines.top.set_visible(False)
+    ax.spines[['left', 'right', 'top']].set_visible(False)
     ax.yaxis.set_major_locator(ticker.NullLocator())
     ax.tick_params(which='major', width=1.00, length=5)
     ax.tick_params(which='minor', width=0.75, length=2.5)
@@ -57,17 +56,17 @@ def plot_axis(ax, locator=None, xmax='2002-02-01', fmt=None, formatter=None):
             fontsize=14, fontname='Monospace', color='tab:blue')
 
 
-fig, ax = plt.subplots(len(locators), 1, figsize=(8, len(locators) * .8),
-                       layout='constrained')
+fig, axs = plt.subplots(len(locators), 1, figsize=(8, len(locators) * .8),
+                        layout='constrained')
 fig.suptitle('Date Locators')
-for i, loc in enumerate(locators):
-    plot_axis(ax[i], *loc)
+for ax, (locator, xmax, fmt) in zip(axs, locators):
+    plot_axis(ax, locator, xmax, fmt)
 
-fig, ax = plt.subplots(len(formatters), 1, figsize=(8, len(formatters) * .8),
-                       layout='constrained')
+fig, axs = plt.subplots(len(formatters), 1, figsize=(8, len(formatters) * .8),
+                        layout='constrained')
 fig.suptitle('Date Formatters')
-for i, fmt in enumerate(formatters):
-    plot_axis(ax[i], formatter=fmt)
+for ax, fmt in zip(axs, formatters):
+    plot_axis(ax, formatter=fmt)
 
 
 # %%