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japanize-matplotlib

library1.1.3pypypiunverified

Japanize Matplotlib (version 1.1.3) is a Python library that automatically configures Matplotlib to display Japanese fonts correctly. It simplifies the process of handling Japanese text in plots by applying a default font (IPAexGothic) to Matplotlib's settings upon import. The library is currently in maintenance mode, with the last major update in October 2020.

data

pip install japanize-matplotlib

github ↗package ↗

INSTALL

IMPORT

SIG · JAPANIZE-MATPLOTLI

japanize-matplotlib

datapythonv1.1.3

Install

8.6s avg

Import

1723ms

Disk

187MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.1.3 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.910 runs

installs and imports cleanly · install 0.0s · import 1.098s · 184.7MB

glibc

py 3.10–3.910 runs

installs and imports cleanly · install 8.6s · import 0.969s · 177MB

187MB installed

● package 187MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

japanize_matplotlib

✓ import japanize_matplotlib

✗ import japanize-matplotlib

Import `japanize_matplotlib` after `matplotlib.pyplot` to automatically configure Japanese font display. Then, create your plots as usual, and Japanese text will be rendered correctly.

import matplotlib.pyplot as plt import japanize_matplotlib plt.plot([1, 2, 3, 4]) plt.xlabel('簡単なグラフ (Simple Graph)') plt.ylabel('値 (Value)') plt.title('日本語タイトル (Japanese Title)') plt.grid(True) plt.show()

Debug

Known issues

gotchaImporting `japanize_matplotlib` might be ineffective if other plotting libraries (e.g., Seaborn) are initialized afterward and override Matplotlib's font settings.

fix

Ensure `import japanize_matplotlib` occurs *after* other plotting library initializations (e.g., `sns.set()`), or explicitly call `japanize_matplotlib.japanize()` after such calls. Alternatively, configure the other library to use 'IPAexGothic' font directly (e.g., `sns.set(font='IPAexGothic')`).

affects: All versions

gotchaLinters or code formatters may remove the `import japanize_matplotlib` line if they deem it unused, as its effect is side-dependent.

fix

To prevent removal, add a `# noqa: F401` comment to the import line (e.g., `import japanize_matplotlib # noqa: F401`) or explicitly call `japanize_matplotlib.japanize()` in your code.

affects: All versions

Upgrade

Version history

1.1.3latest on PyPI · released Oct 21, 2020

Audit

Dependencies

matplotlibrequiredCore plotting library that this package extends for Japanese font support.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/uehara1414/japanize-matplotlib ↗

packagehttps://pypi.org/project/japanize-matplotlib/ ↗