matplotlibのAxesの枠線の太さを変える

例えば、x軸とy軸のみ表示する

axes_line_width.py

# !/usr/bin/env python3

import numpy as np
import matplotlib.pyplot as plt

# prepare test data
data=np.random.randn(1000)

# plot
fig=plt.figure(figsize=(5,2.5))
ax=fig.add_subplot(111)
ax.hist(data)  # histogram

axis=['top','bottom','left','right']
line_width=[0, 0.5, 0.5, 0]

for a,w in zip(axis, line_width):  # change axis width
    ax.spines[a].set_linewidth(w)

plt.savefig('plot_out.pdf')

環境

Ubuntu 18.04
Python 3.7.2
matplotlib 3.0.3
seaborn 0.9.0
numpy 1.15.4