1、导入模块 我们在编程过程中经常会不经意的使用到一些尚未导入的类和模块,在这种情况下Pycharm会帮助我们定位模块文件位置并将其添加到导入列表中,这也就是所谓的自动导入模块功能。 为了研究这个功能,我们借用之前已经编写好的Solver类,输入以下代码: 在输入math.sqrt(d)的时候,Pycharm会弹出一个菜单来提示你导入...
fetchmany(self, size=None):接收size条返回结果行.如果size的值大于返回的结果行的数量,则会返回cursor.arraysize条数据. fetchone(self):返回一条结果行. scroll(self, value, mode='relative'):移动指针到某一行.如果mode='relative',则表示从当前所在行移动value条,如果mode='absolute',则表示从结果集的第...
# ret = cursor.fetchone() # 接着上一条返回一条数据 # print(ret) ret = cursor.fetchmany(3) # 查询具体多少条数据,这里查询前三条数据 print(ret) # cursor.scroll(0, mode="absolute") # 绝对移动,写多少就是移到多少,这里从第1条数据开始查 cursor.scroll(-1, mode="relative") #相对移动,...
MongoDB: Editing fields in results- You can now edit the results in MongoDB collections just as easily as in relational databases, as well as edit result sets obtained via .find(). This works even when cursor methods that modify the result, such as sort() or limit(), are executed after...
AS anon_1 FROM `group` """ # 原生SQL """ # 查询 cursor = session.execute('select * from users') result = cursor.fetchall() # 添加 cursor = session.execute('insert into users(name) values(:value)',params={"value":'wupeiqi'}) session.commit() print(cursor.lastrowid) """ session...
self.cursor.execute(sql) print(f'数据表{tName}建立成功') exceptExceptionase: print(f'数据表{tName}建立失败,请检查SQL语句') print(e) self.close() sys.exit(0) definsertValues(self,sql='',values=[]): assertvalues!=[],'请输入数据' ...
PressAltShiftInsert. In the main menu, go toEdit | Column Selection Mode. From the context menu of the editor, chooseColumn Selection Mode. In thecolumn selection mode, keyboard navigation and selection shortcuts in the current document work differently to simplify adding multiple carets and makin...
let g:multi_cursor_next_key = ',cs' let g:multi_cursor_prev_key = ',cr' let g:multi_cursor_skip_key = ',ce' nmap ,cs<Plug>NextWholeOccurrence xmap ,cs<Plug>NextWholeOccurrence nmap ,ce<Plug>SkipOccurrence xmap ,ce<Plug>SkipOccurrence ...
"vim.foldfix":true, "vim.easymotion":true, "vim.incsearch":true, "vim.useCtrlKeys":true, "vim.surround":true, "vim.sneak":true, "vim.sneakUseIgnorecaseAndSmartcase":true, "vim.normalModeKeyBindingsNonRecursive":[ // Go to start or end of line--- { "before":[ "H" ], "after"...
In PyCharm 2022.1, editing the results in MongoDB collections or result sets obtained via.find()became as easy as it is in relational databases. This improvement also works when cursor methods that modify the result, such assort()orlimit(), are executed after.find(). ...