If you need a pen

知乎搬用工
10元以内白金Preppy

500元:白金 3776钢尖和金尖。  写乐 14K Profit 1911 象牙色特别版

750元Lamy 2000。
Lamy的旗舰款钢笔。是暗尖14k金笔。活塞上墨,2.5毫升的墨水储存量(百乐是0.6)顺滑软弹。这支笔是经典Bauhaus设计(其实我也不懂,反正就是实用又好看)。从60年代就开始生产。别看这支笔好像很贵,实际上在是性价比超高的一只钢笔。
优点:活塞大容量上墨,玻璃拉丝(手出汗的人不用担心抓不稳钢笔了),滑(真的很滑啊)。
缺点:我目前还没有发现任何缺点。。。。。。要有的话就是活塞比较涩吧。(上硅油就能解决的事)

1000元:写乐21k。
写乐旗舰款,鱼雷仿万宝龙设计。21k笔尖,顺滑带写乐特有的阻尼感。有长刀研笔尖款。(长刀研是写乐一种特有的打磨方式,类似于书法尖,但是笔尖是直的,铱点打磨不同而已。)
优点:顺滑、手感好。其实没什么特别的优点,就是各方面都优秀,没有特别出奇的地方。
缺点:同事朋友:呵呵,你的钢笔是什么牌子的啊,万宝龙吧?诶怎么没有小百花,盗版的吧。还写乐,一听就像玩具。。。。。。几十块的地摊吧。
还有,写乐21k作为写乐旗舰,居然是上墨器上墨,写乐的上墨器有多难用你们知道吗,又小又难看。活塞款又要多加钱。
QPainter is a class in PyQt5 that provides a set of painting methods that can be used to draw on widgets, such as windows, buttons, and labels. It allows you to create custom graphics and visuals for your PyQt5 applications. Here are some common methods used in QPainter: - begin(): This method starts the painting process and specifies the device to be painted on. - end(): This method ends the painting process and releases the device. - setPen(): This method sets the pen color, width, and style used for drawing lines and outlines. - setBrush(): This method sets the brush color and style used for filling shapes. - drawText(): This method draws text on the widget. - drawLine(): This method draws a line on the widget. - drawRect(): This method draws a rectangle on the widget. - drawEllipse(): This method draws an ellipse on the widget. - drawArc(): This method draws an arc on the widget. To use QPainter, you need to create a QPainter object and call its methods to draw on the widget. Here's an example: ```python import sys from PyQt5.QtWidgets import QApplication, QWidget from PyQt5.QtGui import QPainter, QColor, QBrush class MyWidget(QWidget): def paintEvent(self, event): painter = QPainter(self) painter.setPen(QColor(255, 0, 0)) painter.setBrush(QBrush(QColor(255, 255, 0))) painter.drawRect(10, 10, 100, 100) painter.drawText(50, 50, "Hello PyQt5") if __name__ == '__main__': app = QApplication(sys.argv) widget = MyWidget() widget.show() sys.exit(app.exec_()) ``` This code creates a custom widget that draws a red rectangle with a yellow fill and some text. The paintEvent() method is called whenever the widget needs to be repainted, and it creates a QPainter object to draw on the widget. The setPen() and setBrush() methods are used to set the pen and brush colors, and the drawRect() and drawText() methods are used to draw the rectangle and text, respectively.
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