log parse count dates

date.py

import fileinput
from datetime import datetime
import matplotlib.pyplot as plt
from matplotlib.dates import DateFormatter

x, y = [], []
for line in fileinput.input():
   y.append(int(line.split()[0]))
   x.append(datetime.fromisoformat(line.split()[1]))

fig, ax = plt.subplots()
ax.plot(x,y)

myFmt = DateFormatter("%d")
ax.xaxis.set_major_formatter(myFmt)

## Rotate date labels automatically
fig.autofmt_xdate()
plt.show()

logDates.bash

#!/bin/bash
grep -o "[0-9]\{1,4\}-[0-9]\{1,2\}-[0-9]\{1,4\}" sample.log | sort | uniq -c | python3 ./date.py