Python for while <p><span style="font-family: arial, helvetica, sans-serif;">for 嵌套<br/></span></p><pre class="brush:python;toolbar:false"><span style="font-family: arial, helvetica, sans-serif;">for i in range(1, 10):<br/> for j in range(1, i+1):<br/> print(f'{i} x {j} = {i * j}',end=' ')<br/> print()</span></pre><p><br/></p><p><span style="font-family: arial, helvetica, sans-serif;">while嵌套</span></p><pre class="brush:python;toolbar:false"><span style="font-family: arial, helvetica, sans-serif;">i = 1<br/>while i < 10:<br/> j = 1<br/> while j < i + 1:<br/> print(f'{i} x {j} = {i * j}', end=' ')<br/> j += 1<br/> print()<br/> i += 1</span></pre><p><br/></p><p><span style="font-family: arial, helvetica, sans-serif;">while for嵌套</span></p><pre class="brush:python;toolbar:false"><span style="font-family: arial, helvetica, sans-serif;">i = 1<br/>while i < 10:<br/> for j in range(1, i + 1):<br/> print(f'{i} x {j} = {i * j}', end=' ')<br/> print()<br/> i += 1</span></pre><p><br/></p><p><span style="font-family: arial, helvetica, sans-serif;">退出、break、continue</span></p><pre class="brush:python;toolbar:false"><span style="font-family: arial, helvetica, sans-serif;">x = True<br/>while x:<br/> s = input('input:')<br/> if s == 'e':<br/> x = False<br/> print('exit , else 会运行')<br/> elif s == 'ee':<br/> print('exit , else 不会运行')<br/> break<br/> elif s == 'c':<br/> continue # 不做任何事情<br/> print('print:', s)<br/>else:<br/> # beak时 不会执行<br/> print('hello')<br/></span></pre><p><br/></p> Python 2022-04-16 评论 127 次浏览
django form field 表单输出选项{{ form.as_table }}：以表格形式加载表单元素{{ form.as_p }}：以段落形式加载表单元素{{ form.as_ul }：以列表形式加载表单元素阅读全文 django 2022-04-11 评论 195 次浏览