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<span role="presentation"><span class="cm-keyword">import</span> <span class="cm-variable">numpy</span> <span class="cm-keyword">as</span> <span class="cm-variable">np</span></span> |
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<span role="presentation"><span class="cm-keyword">import</span> <span class="cm-variable">pandas</span> <span class="cm-keyword">as</span> <span class="cm-variable">pd</span></span> |
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<span role="presentation"><span class="cm-variable">np</span>.<span class="cm-property">random</span>.<span class="cm-property">seed</span>(<span class="cm-number">0</span>)</span> |
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<span role="presentation"><span class="cm-variable">columns</span> = [<span class="cm-string">"a"</span>, <span class="cm-string">"b"</span>, <span class="cm-string">"c"</span>, <span class="cm-string">"d"</span>, <span class="cm-string">"e"</span>]</span> |
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<span role="presentation"></span> |
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<span role="presentation"><span class="cm-comment"># DataFrameを生成し、列を追加</span></span> |
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<span role="presentation"><span class="cm-variable">df</span> = <span class="cm-variable">pd</span>.<span class="cm-property">DataFrame</span>()</span> |
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<span role="presentation"><span class="cm-keyword">for</span> <span class="cm-variable">column</span> <span class="cm-keyword">in</span> <span class="cm-variable">columns</span>:</span> |
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<span role="presentation"> <span class="cm-variable">df</span>[<span class="cm-variable">column</span>] = <span class="cm-variable">np</span>.<span class="cm-property">random</span>.<span class="cm-property">choice</span>(<span class="cm-builtin">range</span>(<span class="cm-number">1</span>, <span class="cm-number">11</span>), <span class="cm-number">10</span>)</span> |
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<span role="presentation"><span class="cm-variable">df</span>.<span class="cm-property">index</span> = <span class="cm-builtin">range</span>(<span class="cm-number">1</span>, <span class="cm-number">11</span>)</span> |
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<span role="presentation"></span> |
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<span role="presentation"><span class="cm-comment"># iloc[]を使ってdfの2行目から5行目までの4行と、"c", "5"の2列を含むDataFrameをdfに代入</span></span> |
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<span role="presentation"><span class="cm-variable">df</span> = <span class="cm-variable">df</span>.<span class="cm-property">iloc</span>[[<span class="cm-number">1</span>,<span class="cm-number">2</span>,<span class="cm-number">3</span>,<span class="cm-number">4</span>],[<span class="cm-number">2</span>,<span class="cm-number">4</span>]]</span> |
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<span role="presentation"></span> |
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<span role="presentation"><span class="cm-builtin">print</span><span class=" CodeMirror-matchingbracket">(</span><span class="cm-variable">df</span><span class=" CodeMirror-matchingbracket">)</span></span> |
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