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Diffstat (limited to 'doc/add_argument.html')
| -rw-r--r-- | doc/add_argument.html | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/add_argument.html b/doc/add_argument.html index c4e1d30..1d34a65 100644 --- a/doc/add_argument.html +++ b/doc/add_argument.html @@ -295,7 +295,8 @@ <span class="gp">... </span> <span class="n">value</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">string</span><span class="p">)</span> <span class="gp">... </span> <span class="n">sqrt</span> <span class="o">=</span> <span class="n">math</span><span class="o">.</span><span class="n">sqrt</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="gp">... </span> <span class="k">if</span> <span class="n">sqrt</span> <span class="o">!=</span> <span class="nb">int</span><span class="p">(</span><span class="n">sqrt</span><span class="p">):</span> -<span class="gp">... </span> <span class="k">raise</span> <span class="ne">TypeError</span><span class="p">()</span> +<span class="gp">... </span> <span class="n">msg</span> <span class="o">=</span> <span class="s">"</span><span class="si">%r</span><span class="s"> is not a perfect square"</span> <span class="o">%</span> <span class="n">string</span> +<span class="gp">... </span> <span class="k">raise</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentTypeError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="gp">... </span> <span class="k">return</span> <span class="n">value</span> <span class="gp">...</span> <span class="gp">>>> </span><span class="n">parser</span> <span class="o">=</span> <span class="n">argparse</span><span class="o">.</span><span class="n">ArgumentParser</span><span class="p">(</span><span class="n">prog</span><span class="o">=</span><span class="s">'PROG'</span><span class="p">)</span> @@ -304,7 +305,7 @@ <span class="go">Namespace(foo=9)</span> <span class="gp">>>> </span><span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">(</span><span class="s">'7'</span><span class="o">.</span><span class="n">split</span><span class="p">())</span> <span class="go">usage: PROG [-h] foo</span> -<span class="go">PROG: error: argument foo: invalid perfect_square value: '7'</span> +<span class="go">PROG: error: argument foo: '7' is not a perfect square</span> </pre></div> </div> <p>Note that if your type-checking function is just checking for a particular set of values, it may be more convenient to use the <a class="reference internal" href="#choices">choices</a> keyword argument:</p> |