[python] migrate to f-strings in interactive_plot_example.ipynb (#4430)

3594f369 · Nikita Titov · GitHub · 184aaa00 · 3594f369
Unverified Commit 3594f369 authored Jul 04, 2021 by Nikita Titov Committed by GitHub Jul 03, 2021
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examples/python-guide/notebooks/interactive_plot_example.ipynb ...les/python-guide/notebooks/interactive_plot_example.ipynb +1 -1

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--- a/examples/python-guide/notebooks/interactive_plot_example.ipynb
+++ b/examples/python-guide/notebooks/interactive_plot_example.ipynb
@@ -143,7 +143,7 @@
    "                lgb_train,\n",
    "                num_boost_round=100,\n",
    "                valid_sets=[lgb_train, lgb_test],\n",
-    "                feature_name=['f' + str(i + 1) for i in range(X_train.shape[-1])],\n",
+    "                feature_name=[f'f{i + 1}' for i in range(X_train.shape[-1])],\n",
    "                categorical_feature=[21],\n",
    "                evals_result=evals_result,\n",
    "                verbose_eval=10)"