Failed to get desired results while using the pyplot library.

import matplotlib.pyplot as plt import csv

def analyze(): day = range(1, 31) temp = [] datafile = '15_01.csv' with open(datafile, 'rt') as f: data = csv.reader(f, delimiter=',') for d in data: temp.append(d)

print(temp)

x = [day for day, temp, hum in temp]
y = [temp for day, temp, hum in temp]

p = plt.plot(x, y, 'r^--', label='temp')

plt.legend()
plt.title('2015 January tempature')
plt.xlabel('Day'), plt.ylabel('tempature')
plt.show()

if name == 'main': analyze()

The code is the same as above and reads the csv file to draw a temperature graph from the 1st to the 31st

It is not sorted in order as shown above, but is sorted as 1 -> 10 - 19 - > 2 -> 20 - 29 How can I arrange it in the order I want?