apply PEP-8 throughout the codebase

.flake8

@@ -0,0 +1,5 @@
+[flake8]
+ignore = E20,E22,E501,E701,F401,W
+
+[pep8]
+select = E12,E231,E241,E251,E26,E30

.pre-commit-config.yaml

@@ -9,3 +9,7 @@ repos:
       - id: check-yaml
       - id: end-of-file-fixer
       - id: trailing-whitespace
+  - repo: https://github.com/pycqa/flake8
+    rev: 4.0.1
+    hooks:
+      - id: flake8

docs/conf.py

@@ -5,8 +5,8 @@
 html_title = 'Visualization with Python'
 project = "Matplotlib cheatsheets"
 copyright = (
-     f"2012 - {datetime.datetime.now().year} The Matplotlib development team"
- )
+    f"2012 - {datetime.datetime.now().year} The Matplotlib development team"
+)
 author = "Matplotlib Developers"
 
 # -- General configuration ---------------------------------------------------

logos/mpl-logos2.py

@@ -155,6 +155,7 @@ def make_logo(height_px, lw_bars, lw_grid, lw_border, rgrid, with_text=False):
 
     return fig, ax
 
+
 ##############################################################################
 # A large logo:
 

requirements/requirements.in

@@ -1,11 +1,13 @@
+autopep8
 bump2version
 cartopy==0.19.0.post1
+flake8
 matplotlib==3.4.2
+mpl-sphinx-theme
 pdfx
 pip-tools
 pre-commit
 scipy
 sphinx
-mpl-sphinx-theme
 
 --no-binary shapely

requirements/requirements.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with python 3.9
+# This file is autogenerated by pip-compile
 # To update, run:
 #
 #    pip-compile requirements.in
@@ -10,6 +10,8 @@ alabaster==0.7.12
     # via sphinx
 appdirs==1.4.4
     # via virtualenv
+autopep8==1.6.0
+    # via -r requirements.in
 babel==2.9.1
     # via sphinx
 beautifulsoup4==4.9.3
@@ -44,12 +46,20 @@ docutils==0.17.1
     #   sphinx
 filelock==3.0.12
     # via virtualenv
+flake8==4.0.1
+    # via -r requirements.in
 identify==2.2.2
     # via pre-commit
 idna==3.3
     # via requests
 imagesize==1.2.0
     # via sphinx
+importlib-metadata==4.2.0
+    # via
+    #   flake8
+    #   pep517
+    #   pre-commit
+    #   virtualenv
 jinja2==3.0.2
     # via sphinx
 kiwisolver==1.3.1
@@ -58,6 +68,8 @@ markupsafe==2.0.1
     # via jinja2
 matplotlib==3.4.2
     # via -r requirements.in
+mccabe==0.6.1
+    # via flake8
 mpl-sphinx-theme==0.0.6
     # via -r requirements.in
 nodeenv==1.5.0
@@ -81,10 +93,16 @@ pip-tools==6.1.0
     # via -r requirements.in
 pre-commit==2.11.1
     # via -r requirements.in
+pycodestyle==2.8.0
+    # via
+    #   autopep8
+    #   flake8
 pycparser==2.20
     # via cffi
 pydata-sphinx-theme==0.7.1
     # via mpl-sphinx-theme
+pyflakes==2.4.0
+    # via flake8
 pygments==2.10.0
     # via sphinx
 pyparsing==2.4.7
@@ -134,12 +152,19 @@ sphinxcontrib-serializinghtml==1.1.5
     # via sphinx
 toml==0.10.2
     # via
+    #   autopep8
     #   pep517
     #   pre-commit
+typing-extensions==4.0.0
+    # via importlib-metadata
 urllib3==1.26.7
     # via requests
 virtualenv==20.4.3
     # via pre-commit
+zipp==3.6.0
+    # via
+    #   importlib-metadata
+    #   pep517
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip

scripts/adjustements.py

@@ -10,39 +10,39 @@
 
 
 fig = plt.figure(figsize=(4.25, 4.25 * 95/115))
-ax = fig.add_axes([0,0,1,1], frameon=False, aspect=1,
-                  xlim=(0-5,100+10), ylim=(-10,80+5), xticks=[], yticks=[])
+ax = fig.add_axes([0, 0, 1, 1], frameon=False, aspect=1,
+                  xlim=(0-5, 100+10), ylim=(-10, 80+5), xticks=[], yticks=[])
 
 
 box = mpatches.FancyBboxPatch(
-    (0,0), 100, 83,  mpatches.BoxStyle("Round", pad=0, rounding_size=2),
+    (0, 0), 100, 83, mpatches.BoxStyle("Round", pad=0, rounding_size=2),
     linewidth=1., facecolor="0.9", edgecolor="black")
 ax.add_artist(box)
 
 box = mpatches.FancyBboxPatch(
-    (0,0), 100, 75, mpatches.BoxStyle("Round", pad=0, rounding_size=0),
+    (0, 0), 100, 75, mpatches.BoxStyle("Round", pad=0, rounding_size=0),
     linewidth=1., facecolor="white", edgecolor="black")
 ax.add_artist(box)
 
 
 box = mpatches.Rectangle(
-    (5,5), 45, 30, zorder=10,
+    (5, 5), 45, 30, zorder=10,
     linewidth=1.0, facecolor="white", edgecolor="black")
 ax.add_artist(box)
 
 box = mpatches.Rectangle(
-    (5,40), 45, 30, zorder=10,
+    (5, 40), 45, 30, zorder=10,
     linewidth=1.0, facecolor="white", edgecolor="black")
 ax.add_artist(box)
 
 box = mpatches.Rectangle(
-    (55,5), 40, 65, zorder=10,
+    (55, 5), 40, 65, zorder=10,
     linewidth=1.0, facecolor="white", edgecolor="black")
 ax.add_artist(box)
 
 # Window button
-X, Y = [5,10,15], [79,79,79]
-plt.scatter(X, Y, s=75,  zorder=10,
+X, Y = [5, 10, 15], [79, 79, 79]
+plt.scatter(X, Y, s=75, zorder=10,
             edgecolor="black", facecolor="white", linewidth=1)
 
 
@@ -60,7 +60,7 @@
 plt.plot(X, Y, color="black", linestyle=":", linewidth=1, clip_on=False)
 
 
-def ext_arrow(p0,p1,p2,p3):
+def ext_arrow(p0, p1, p2, p3):
     p0, p1 = np.asarray(p0), np.asarray(p1)
     p2, p3 = np.asarray(p2), np.asarray(p3)
     ax.arrow(*p0, *(p1-p0), zorder=20, linewidth=0,
@@ -69,9 +69,10 @@ def ext_arrow(p0,p1,p2,p3):
     ax.arrow(*p3, *(p2-p3), zorder=20, linewidth=0,
              length_includes_head=True, width=.4,
              head_width=2, head_length=2, color="black")
-    plt.plot([p1[0],p2[0]], [p1[1],p2[1]], linewidth=.9, color="black")
+    plt.plot([p1[0], p2[0]], [p1[1], p2[1]], linewidth=.9, color="black")
 
-def int_arrow(p0,p1):
+
+def int_arrow(p0, p1):
     p0, p1 = np.asarray(p0), np.asarray(p1)
     ax.arrow(*((p0+p1)/2), *((p1-p0)/2), zorder=20, linewidth=0,
              length_includes_head=True, width=.4,
@@ -81,48 +82,47 @@ def int_arrow(p0,p1):
              head_width=2, head_length=2, color="black")
 
 
-
 x = 0
 y = 10
-ext_arrow( (x-4,y), (x,y), (x+5,y), (x+9,y) )
+ext_arrow( (x-4, y), (x, y), (x+5, y), (x+9, y) )
 ax.text(x+9.5, y, "left", ha="left", va="center", size="x-small", zorder=20)
 
 x += 50
-ext_arrow( (x-4,y), (x,y), (x+5,y), (x+9,y) )
+ext_arrow( (x-4, y), (x, y), (x+5, y), (x+9, y) )
 ax.text(x-4.5, y, "wspace", ha="right", va="center", size="x-small", zorder=20)
 
 x += 45
-ext_arrow( (x-4,y), (x,y), (x+5,y), (x+9,y) )
+ext_arrow( (x-4, y), (x, y), (x+5, y), (x+9, y) )
 ax.text(x-4.5, y, "right", ha="right", va="center", size="x-small", zorder=20)
 
 y = 0
 x = 25
-ext_arrow( (x,y-4), (x,y), (x,y+5), (x,y+9) )
+ext_arrow( (x, y-4), (x, y), (x, y+5), (x, y+9) )
 ax.text(x, y+9.5, "bottom", ha="center", va="bottom", size="x-small", zorder=20)
 
 y += 35
-ext_arrow( (x,y-4), (x,y), (x,y+5), (x,y+9) )
+ext_arrow( (x, y-4), (x, y), (x, y+5), (x, y+9) )
 ax.text(x, y-4.5, "hspace", ha="center", va="top", size="x-small", zorder=20)
 
 y += 35
-ext_arrow( (x,y-4), (x,y), (x,y+5), (x,y+9) )
+ext_arrow( (x, y-4), (x, y), (x, y+5), (x, y+9) )
 ax.text(x, y-4.5, "top", ha="center", va="top", size="x-small", zorder=20)
 
-int_arrow((0,-5), (100,-5))
+int_arrow((0, -5), (100, -5))
 ax.text(50, -5, "figure width", backgroundcolor="white", zorder=30,
         ha="center", va="center", size="x-small")
 
-int_arrow((105,0), (105,75))
+int_arrow((105, 0), (105, 75))
 ax.text(105, 75/2, "figure height", backgroundcolor="white", zorder=30,
-        rotation = "vertical", ha="center", va="center", size="x-small")
+        rotation="vertical", ha="center", va="center", size="x-small")
 
-int_arrow((55,62.5), (95,62.5))
+int_arrow((55, 62.5), (95, 62.5))
 ax.text(75, 62.5, "axes width", backgroundcolor="white", zorder=30,
         ha="center", va="center", size="x-small")
 
-int_arrow((62.5,5), (62.5,70))
+int_arrow((62.5, 5), (62.5, 70))
 ax.text(62.5, 35, "axes height", backgroundcolor="white", zorder=30,
-        rotation = "vertical", ha="center", va="center", size="x-small")
+        rotation="vertical", ha="center", va="center", size="x-small")
 
 
 plt.savefig("../figures/adjustments.pdf")