How can I change the x axis in matplotlib so there is no white space?

Question

So currently learning how to import data and work with it in matplotlib and I am having trouble even tho I have the exact code from the book.

This is what the plot looks like, but my question is how can I get it where there is no white space between the start and the end of the x-axis.

Here is the code:

import csv

from matplotlib import pyplot as plt
from datetime import datetime

# Get dates and high temperatures from file.
filename = 'sitka_weather_07-2014.csv'
with open(filename) as f:
    reader = csv.reader(f)
    header_row = next(reader)

    #for index, column_header in enumerate(header_row):
        #print(index, column_header)
    dates, highs = [], []
    for row in reader:
        current_date = datetime.strptime(row[0], "%Y-%m-%d")
        dates.append(current_date)

        high = int(row[1])
        highs.append(high)

# Plot data. 
fig = plt.figure(dpi=128, figsize=(10,6))
plt.plot(dates, highs, c='red')


# Format plot.
plt.title("Daily high temperatures, July 2014", fontsize=24)
plt.xlabel('', fontsize=16)
fig.autofmt_xdate()
plt.ylabel("Temperature (F)", fontsize=16)
plt.tick_params(axis='both', which='major', labelsize=16)

plt.show()

Answer 1

If you only want to remove the margin on one side but not the other, e.g. remove the margin from the right but not from the left, you can use set_xlim() on a matplotlib axes object.

import seaborn as sns
import matplotlib.pyplot as plt
import math

max_x_value = 100

x_values = [i for i in range (1, max_x_value + 1)]
y_values = [math.log(i) for i in x_values] 

fig, (ax1, ax2) = plt.subplots(1, 2, figsize=(10, 4))
sn.lineplot(ax=ax1, x=x_values, y=y_values)
sn.lineplot(ax=ax2, x=x_values, y=y_values)
ax2.set_xlim(-5, max_x_value) # tune the -5 to your needs