######################################################################
-def gentle_download(url, delay = 86400):
- filename = url[url.rfind('/') + 1:]
+
+def gentle_download(url, delay=86400):
+ filename = url[url.rfind("/") + 1 :]
if not os.path.isfile(filename) or os.path.getmtime(filename) < time.time() - delay:
- print(f'Retrieving {url}')
+ print(f"Retrieving {url}")
urllib.request.urlretrieve(url, filename)
return filename
+
######################################################################
nbcases_filename = gentle_download(
- 'https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_time_series/time_series_covid19_confirmed_global.csv'
+ "https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_time_series/time_series_covid19_confirmed_global.csv"
)
######################################################################
-with open(nbcases_filename, newline='') as csvfile:
- reader = csv.reader(csvfile, delimiter=',')
+with open(nbcases_filename, newline="") as csvfile:
+ reader = csv.reader(csvfile, delimiter=",")
times = []
nb_cases = {}
time_col = 5
for row_nb, row in enumerate(reader):
for col_nb, field in enumerate(row):
if row_nb == 0 and col_nb >= time_col:
- times.append(time.mktime(time.strptime(field, '%m/%d/%y')))
+ times.append(time.mktime(time.strptime(field, "%m/%d/%y")))
if row_nb >= 1:
if col_nb == 1:
country = field
countries = list(nb_cases.keys())
countries.sort()
-print('Countries: ', countries)
+print("Countries: ", countries)
-nb_cases['World'] = sum(nb_cases.values())
+nb_cases["World"] = sum(nb_cases.values())
######################################################################
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
-ax.yaxis.grid(color='gray', linestyle='-', linewidth=0.25)
-ax.set_title('Nb. of COVID-19 cases')
-ax.set_xlabel('Date', labelpad = 10)
-ax.set_yscale('log')
+ax.yaxis.grid(color="gray", linestyle="-", linewidth=0.25)
+ax.set_title("Nb. of COVID-19 cases")
+ax.set_xlabel("Date", labelpad=10)
+ax.set_yscale("log")
-myFmt = mdates.DateFormatter('%b %d')
+myFmt = mdates.DateFormatter("%b %d")
ax.xaxis.set_major_formatter(myFmt)
dates = mdates.epoch2num(times)
for key, color, label in [
- ('World', 'blue', 'World'),
- ('Switzerland', 'red', 'Switzerland'),
- ('France', 'lightgreen', 'France'),
- ('US', 'black', 'USA'),
- ('Korea, South', 'gray', 'South Korea'),
- ('Italy', 'purple', 'Italy'),
- ('China', 'orange', 'China')
+ ("World", "blue", "World"),
+ ("Switzerland", "red", "Switzerland"),
+ ("France", "lightgreen", "France"),
+ ("US", "black", "USA"),
+ ("Korea, South", "gray", "South Korea"),
+ ("Italy", "purple", "Italy"),
+ ("China", "orange", "China"),
]:
- ax.plot(dates, nb_cases[key],
- color = color, label = label, linewidth = 2)
+ ax.plot(dates, nb_cases[key], color=color, label=label, linewidth=2)
-ax.legend(frameon = False)
+ax.legend(frameon=False)
plt.show()
-fig.savefig('covid19_nb_cases.png')
+fig.savefig("covid19_nb_cases.png")
######################################################################
--- /dev/null
+#!/usr/bin/env python
+
+import time, socket, threading, struct, pickle
+
+import math, sys, argparse
+
+######################################################################
+
+parser = argparse.ArgumentParser(
+ formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+)
+
+parser.add_argument("--server_host", type=str, default=None)
+
+parser.add_argument("--port", type=int, default=12021)
+
+args = parser.parse_args()
+
+######################################################################
+
+
+class SocketConnection:
+ def __init__(self, established_socket, read_len=16384):
+ self.read_len = read_len
+ self.socket = established_socket
+ self.socket.setblocking(1)
+ self.buffer = b""
+ self.SEND_LOCK = threading.Lock()
+ self.RECEIVE_LOCK = threading.Lock()
+ self.failed = False
+
+ def send(self, x):
+ with self.SEND_LOCK:
+ data = pickle.dumps(x)
+ self.socket.send(struct.pack("!i", len(data)))
+ self.socket.sendall(data)
+
+ def raw_read(self, l):
+ while len(self.buffer) < l:
+ d = self.socket.recv(self.read_len)
+ if d:
+ self.buffer += d
+ else:
+ raise EOFError()
+
+ x = self.buffer[:l]
+ self.buffer = self.buffer[l:]
+ return x
+
+ def receive(self):
+ with self.RECEIVE_LOCK:
+ l = struct.unpack("!i", self.raw_read(4))[0]
+ return pickle.loads(self.raw_read(l))
+
+
+######################################################################
+
+
+class CultureServer:
+ def __init__(self, port):
+ s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ s.bind(("0.0.0.0", port))
+ s.listen(5)
+ self.nb_accepts = 0
+
+ while True:
+ client_socket, ip_and_port = s.accept()
+ link = SocketConnection(client_socket)
+
+ threading.Thread(
+ target=self.client_loop,
+ kwargs={
+ "link": link,
+ "nb": self.nb_accepts,
+ },
+ daemon=True,
+ ).start()
+
+ self.nb_accepts += 1
+
+ def client_loop(self, link, nb):
+ link.send(f"HELLO #{nb}")
+ try:
+ while True:
+ r = link.receive()
+ print(f'from #{nb} receive "{r}"')
+ link.send(f"ACK {r}")
+ if r == "BYE":
+ break
+ except EOFError:
+ print(f"closing #{nb} on EOF")
+
+
+######################################################################
+
+
+class CultureClient:
+ def __init__(self, server_hostname, port):
+ server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+ server_socket.connect((server_hostname, port))
+ self.link = SocketConnection(server_socket)
+
+ threading.Thread(target=self.receive, daemon=True).start()
+
+ self.send()
+ # threading.Thread(target=self.send, daemon=True).start()
+
+ def receive(self):
+ try:
+ while True:
+ x = self.link.receive()
+ print(f'CultureClient receive "{x}"')
+ except EOFError:
+ print(f"closing connection on EOF")
+
+ def send(self):
+ try:
+ self.link.send(f"HELLO")
+ x = 0
+ while True:
+ time.sleep(5)
+ print(f'CultureClient send "{x}"')
+ self.link.send(x)
+ x += 1
+ except BrokenPipeError:
+ print(f"closing connection on broken pipe")
+
+
+######################################################################
+
+if args.server_host is None:
+ print(f"Starting server port {args.port}")
+ CultureServer(args.port)
+else:
+ print(f"Starting client connecting to {args.server_host}:{args.port}")
+ CultureClient(args.server_host, args.port)
+
+######################################################################
projects / python.git / commitdiff