text: import numpy as np
  import pandas as pd
  import matplotlib.pyplot as plt
  from datetime import datetime
  
  
  def plotGraph(id):
      data = pd.read_csv(f"./data/{id}.csv", header=0, index_col=0, parse_dates=True)
      date_format = "%Y-%m-%d %H:%M:%S.%f"
  
      time_stamp = data["time_stamp"]
      dates = [datetime.strptime(i, date_format) for i in time_stamp]
      days = [i.day for i in dates]
      prices = data["price"]
  
      x_labels = [d.strftime("%d %b") for d in dates]
  
      plt.plot(days, prices)
      plt.xticks(days, x_labels, rotation=45)
      plt.savefig(f"./graphs/{id}.png")