connection style

When creating an annotation using `~.Axes.annotate`, the arrow shape can be
controlled via the *connectionstyle* parameter of *arrowprops*. For further
details see the description of `.FancyArrowPatch`.

import matplotlib.pyplot as plt


def demo_con_style(ax, connectionstyle):
    x1, y1 = 0.3, 0.2
    x2, y2 = 0.8, 0.6

    ax.plot([x1, x2], [y1, y2], ".")
    ax.annotate("",
                xy=(x1, y1), xycoords='data',
                xytext=(x2, y2), textcoords='data',
                arrowprops=dict(arrowstyle="->", color="0.5",
                                shrinkA=5, shrinkB=5,
                                patchA=None, patchB=None,
                                connectionstyle=connectionstyle,
                                ),
                )

    ax.text(.05, .95, connectionstyle.replace(",", ",\n"),
            transform=ax.transAxes, ha="left", va="top")


fig, axs = plt.subplots(3, 5, figsize=(7, 6.3), constrained_layout=True)
demo_con_style(axs[0, 0], "angle3,angleA=90,angleB=0")
demo_con_style(axs[1, 0], "angle3,angleA=0,angleB=90")
demo_con_style(axs[0, 1], "arc3,rad=0.")
demo_con_style(axs[1, 1], "arc3,rad=0.3")
demo_con_style(axs[2, 1], "arc3,rad=-0.3")
demo_con_style(axs[0, 2], "angle,angleA=-90,angleB=180,rad=0")
demo_con_style(axs[1, 2], "angle,angleA=-90,angleB=180,rad=5")
demo_con_style(axs[2, 2], "angle,angleA=-90,angleB=10,rad=5")
demo_con_style(axs[0, 3], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=0")
demo_con_style(axs[1, 3], "arc,angleA=-90,angleB=0,armA=30,armB=30,rad=5")
demo_con_style(axs[2, 3], "arc,angleA=-90,angleB=0,armA=0,armB=40,rad=0")
demo_con_style(axs[0, 4], "bar,fraction=0.3")
demo_con_style(axs[1, 4], "bar,fraction=-0.3")
demo_con_style(axs[2, 4], "bar,angle=180,fraction=-0.2")

for ax in axs.flat:
    ax.set(xlim=(0, 1), ylim=(0, 1.25), xticks=[], yticks=[], aspect=1.25)
fig.set_constrained_layout_pads(wspace=0, hspace=0, w_pad=0, h_pad=0)

plt.show()

matplotlib connect

ConnectionPatch` can be used to draw a line (possibly with arrow head) between points defined in different coordinate systems and/or axes.

annotate tex arrow

import numpy as np import matplotlib.pyplot as plt # Fixing random state for reproducibility np.random.seed(19680801)

matplotlib annotate explain

import matplotlib.pyplot as plt import matplotlib.patches as mpatches fig, axs = plt.subplots(2, 2) x1, y1 = 0.3, 0.3 x2, y2 = 0.7, 0.7

matplotlib anchored box04

from matplotlib.patches import Ellipse import matplotlib.pyplot as plt from matplotlib.offsetbox import (AnchoredOffsetbox, DrawingArea, HPacker, TextArea)

sanic request stream

from sanic import Sanic from sanic.blueprints import Blueprint from sanic.response import stream, text from sanic.views import HTTPMethodView from sanic.views import stream as stream_decorator

amending request object

from random import randint from sanic import Sanic from sanic.response import text app = Sanic("Example")

authorized sanic

# -*- coding: utf-8 -*- from functools import wraps from sanic import Sanic from sanic.response import json

sanic blueprints

from sanic import Blueprint, Sanic from sanic.response import file, json app = Sanic("Example") blueprint = Blueprint("bp_example", url_prefix="/my_blueprint") blueprint2 = Blueprint("bp_example2", url_prefix="/my_blueprint2")

fastapi request directly

from fastapi import FastAPI, Request app = FastAPI() @app.get("/items/{item_id}") def read_root(item_id: str, request: Request):

fastapi websockets

from fastapi import FastAPI, WebSocket from fastapi.responses import HTMLResponse app = FastAPI()

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