Python安裝graphics庫
Python安裝graphics庫
開啟cmd，輸入 where python查詢Python安裝路徑
進入Python安裝路徑中的Lib/site-packages資料夾中，新增 graphics.py 檔案，將以下紅色文字新增進graphics.py檔案中即可
# graphics.py
"""Simple object oriented graphics library
The library is designed to make it very easy for novice programmers to
experiment with computer graphics in an object oriented fashion. It is
written by John Zelle for use with the book "Python Programming: An
Introduction to Computer Science" (Franklin, Beedle & Associates).
LICENSE: This is open-source software released under the terms of the
GPL ().
PLATFORMS: The package is a wrapper around Tkinter and should run on
any platform where Tkinter is available.
INSTALLATION: Put this file somewhere where Python can see it.
OVERVIEW: There are two kinds of objects in the library. The GraphWin
class implements a window where drawing can be done and various
GraphicsObjects are provided that can be drawn into a GraphWin. As a
simple example, here is a complete program to draw a circle of radius
10 centered in a 100x100 window:
--------------------------------------------------------------------
from graphics import *
def main():
win = GraphWin("My Circle", 100, 100)
c = Circle(Point(50,50), 10)
c.draw(win)
win.getMouse() # Pause to view result
win.close() # Close window when done
main()
--------------------------------------------------------------------
GraphWin objects support coordinate transformation through the
setCoords method and pointer-based input through getMouse.
The library provides the following graphical objects:
Point
Line
Circle
Oval
Rectangle
Polygon
Text
Entry (for text-based input)
Image
Various attributes of graphical objects can be set such as
outline-color, fill-color and line-width. Graphical objects also
support moving and hiding for animation effects.
The library also provides a very simple class for pixel-based image
manipulation, Pixmap. A pixmap can be loaded from a file and displayed
using an Image object. Both getPixel and setPixel methods are provided
for manipulating the image.
DOCUMENTATION: For complete documentation, see Chapter 4 of "Python
Programming: An Introduction to Computer Science" by John Zelle,
published by Franklin, Beedle & Associates. Also see
# Version 4.1 12/29/2009
# * Merged Pixmap and Image class. Old Pixmap removed, use Image.
# Version 4.0.1 10/08/2009
# * Modified the autoflush on GraphWin to default to True
# * Autoflush check on close, setBackground
# * Fixed getMouse to flush pending clicks at entry
# Version 4.0 08/2009
# * Reverted to non-threaded version. The advantages (robustness,
# efficiency, ability to use with other Tk code, etc.) outweigh
# the disadvantage that interactive use with IDLE is slightly more
# cumbersome.
# * Modified to run in either Python 2.x or 3.x (same file).
# * Added Image.getPixmap()
# * Added update() -- stand alone function to cause any pending
# graphics changes to display.
#
# Version 3.4 10/16/07
# Fixed GraphicsError to avoid "exploded" error messages.
# Version 3.3 8/8/06
# Added checkMouse method to GraphWin
# Version 3.2.3
# Fixed error in Polygon init spotted by Andrew Harrington
# Fixed improper threading in Image constructor
# Version 3.2.2 5/30/05
# Cleaned up handling of exceptions in Tk thread. The graphics package
# now raises an exception if attempt is made to communicate with
# a dead Tk thread.
# Version 3.2.1 5/22/05
# Added shutdown function for tk thread to eliminate race-condition
# error "chatter" when main thread terminates
# Renamed various private globals with _
# Version 3.2 5/4/05
# Added Pixmap object for simple image manipulation.
# Version 3.1 4/13/05
# Improved the Tk thread communication so that most Tk calls
# do not have to wait for synchonization with the Tk thread.
# (see _tkCall and _tkExec)
# Version 3.0 12/30/04
# Implemented Tk event loop in separate thread. Should now work
# interactively with IDLE. Undocumented autoflush feature is
# no longer necessary. Its default is now False (off). It may
# be removed in a future version.
# Better handling of errors regarding operations on windows that
# have been closed.
# Addition of an isClosed method to GraphWindow class.
# Version 2.2 8/26/04
# Fixed cloning bug reported by Joseph Oldham.
# Now implements deep copy of config info.
# Version 2.1 1/15/04
# Added autoflush option to GraphWin. When True (default) updates on
# the window are done after each action. This makes some graphics
# intensive programs sluggish. Turning off autoflush causes updates
# to happen during idle periods or when flush is called.
# Version 2.0
# Updated Documentation
# Made Polygon accept a list of Points in constructor
# Made all drawing functions call TK update for easier animations
# and to make the overall package work better with
# Python 2.3 and IDLE 1.0 under Windows (still some issues).
# Removed vestigial turtle graphics.
# Added ability to configure font for Entry objects (analogous to Text)
# Added setTextColor for Text as an alias of setFill
# Changed to class-style exceptions
# Fixed cloning of Text objects
# Version 1.6
# Fixed Entry so StringVar uses _root as master, solves weird
# interaction with shell in Idle
# Fixed bug in setCoords. X and Y coordinates can increase in
# "non-intuitive" direction.
# Tweaked wm_protocol so window is not resizable and kill box closes.
# Version 1.5
# Fixed bug in Entry. Can now define entry before creating a
# GraphWin. All GraphWins are now toplevel windows and share
# a fixed root (called _root).
# Version 1.4
# Fixed Garbage collection of Tkinter images bug.
# Added ability to set text atttributes.
# Added Entry boxes.
import time, os, sys
try: # import as appropriate for 2.x vs. 3.x
import tkinter as tk
except:
import Tkinter as tk
##########################################################################
# Module Exceptions
class GraphicsError(Exception):
"""Generic error class for graphics module exceptions."""
pass
OBJ_ALREADY_DRAWN = "Object currently drawn"
UNSUPPORTED_METHOD = "Object doesn't support operation"
BAD_OPTION = "Illegal option value"
DEAD_THREAD = "Graphics thread quit unexpectedly"
_root = tk.Tk()
_root.withdraw()
def update():
_root.update()
############################################################################
# Graphics classes start here
class GraphWin(tk.Canvas):
"""A GraphWin is a toplevel window for displaying graphics."""
def __init__(self, title="Graphics Window",
width=200, height=200, autoflush=True):
master = tk.Toplevel(_root)
master.protocol("WM_DELETE_WINDOW", self.close)
tk.Canvas.__init__(self, master, width=width, height=height)
self.master.title(title)
self.pack()
master.resizable(0,0)
self.foreground = "black"
self.items = []
self.mouseX = None
self.mouseY = None
self.bind("<Button-1>", self._onClick)
self.height = height
self.width = width
self.autoflush = autoflush
self._mouseCallback = None
self.trans = None
self.closed = False
master.lift()
if autoflush: _root.update()
def __checkOpen(self):
if self.closed:
raise GraphicsError("window is closed")
def setBackground(self, color):
"""Set background color of the window"""
self.__checkOpen()
self.config(bg=color)
self.__autoflush()
def setCoords(self, x1, y1, x2, y2):
"""Set coordinates of window to run from (x1,y1) in the
lower-left corner to (x2,y2) in the upper-right corner."""
self.trans = Transform(self.width, self.height, x1, y1, x2, y2)
def close(self):
"""Close the window"""
if self.closed: return
self.closed = True
self.master.destroy()
self.__autoflush()
def isClosed(self):
return self.closed
def isOpen(self):
return not self.closed
def __autoflush(self):
if self.autoflush:
_root.update()
def plot(self, x, y, color="black"):
"""Set pixel (x,y) to the given color"""
self.__checkOpen()
xs,ys = self.toScreen(x,y)
self.create_line(xs,ys,xs+1,ys, fill=color)
self.__autoflush()
def plotPixel(self, x, y, color="black"):
"""Set pixel raw (independent of window coordinates) pixel
(x,y) to color"""
self.__checkOpen()
self.create_line(x,y,x+1,y, fill=color)
self.__autoflush()
def flush(self):
"""Update drawing to the window"""
self.__checkOpen()
self.update_idletasks()
def getMouse(self):
"""Wait for mouse click and return Point object representing
the click"""
self.update() # flush any prior clicks
self.mouseX = None
self.mouseY = None
while self.mouseX == None or self.mouseY == None:
self.update()
if self.isClosed(): raise GraphicsError("getMouse in closed window")
time.sleep(.1) # give up thread
x,y = self.toWorld(self.mouseX, self.mouseY)
self.mouseX = None
self.mouseY = None
return Point(x,y)
def checkMouse(self):
"""Return last mouse click or None if mouse has
not been clicked since last call"""
if self.isClosed():
raise GraphicsError("checkMouse in closed window")
self.update()
if self.mouseX != None and self.mouseY != None:
x,y = self.toWorld(self.mouseX, self.mouseY)
self.mouseX = None
self.mouseY = None
return Point(x,y)
else:
return None
def getHeight(self):
"""Return the height of the window"""
return self.height
def getWidth(self):
"""Return the width of the window"""
return self.width
def toScreen(self, x, y):
trans = self.trans
if trans:
return self.trans.screen(x,y)
else:
return x,y
def toWorld(self, x, y):
trans = self.trans
if trans:
return self.trans.world(x,y)
else:
return x,y
def setMouseHandler(self, func):
self._mouseCallback = func
def _onClick(self, e):
self.mouseX = e.x
self.mouseY = e.y
if self._mouseCallback:
self._mouseCallback(Point(e.x, e.y))
class Transform:
"""Internal class for 2-D coordinate transformations"""
def __init__(self, w, h, xlow, ylow, xhigh, yhigh):
# w, h are width and height of window
# (xlow,ylow) coordinates of lower-left [raw (0,h-1)]
# (xhigh,yhigh) coordinates of upper-right [raw (w-1,0)]
xspan = (xhigh-xlow)
yspan = (yhigh-ylow)
self.xbase = xlow
self.ybase = yhigh
self.xscale = xspan/float(w-1)
self.yscale = yspan/float(h-1)
def screen(self,x,y):
# Returns x,y in screen (actually window) coordinates
xs = (x-self.xbase) / self.xscale
ys = (self.ybase-y) / self.yscale
return int(xs+0.5),int(ys+0.5)
def world(self,xs,ys):
# Returns xs,ys in world coordinates
x = xs*self.xscale + self.xbase
y = self.ybase - ys*self.yscale
return x,y
# Default values for various item configuration options. Only a subset of
# keys may be present in the configuration dictionary for a given item
DEFAULT_CONFIG = {"fill":"",
"outline":"black",
"width":"1",
"arrow":"none",
"text":"",
"justify":"center",
"font": ("helvetica", 12, "normal")}
class GraphicsObject:
"""Generic base class for all of the drawable objects"""
# A subclass of GraphicsObject should override _draw and
# and _move methods.
def __init__(self, options):
# options is a list of strings indicating which options are
# legal for this object.
# When an object is drawn, canvas is set to the GraphWin(canvas)
# object where it is drawn and id is the TK identifier of the
# drawn shape.
self.canvas = None
self.id = None
# config is the dictionary of configuration options for the widget.
config = {}
for option in options:
config[option] = DEFAULT_CONFIG[option]
self.config = config
def setFill(self, color):
"""Set interior color to color"""
self._reconfig("fill", color)
def setOutline(self, color):
"""Set outline color to color"""
self._reconfig("outline", color)
def setWidth(self, width):
"""Set line weight to width"""
self._reconfig("width", width)
def draw(self, graphwin):
"""Draw the object in graphwin, which should be a GraphWin
object. A GraphicsObject may only be drawn into one
window. Raises an error if attempt made to draw an object that
is already visible."""
if self.canvas and not self.canvas.isClosed(): raise GraphicsError(OBJ_ALREADY_DRAWN)
if graphwin.isClosed(): raise GraphicsError("Can't draw to closed window")
self.canvas = graphwin
self.id = self._draw(graphwin, self.config)
if graphwin.autoflush:
_root.update()
def undraw(self):
"""Undraw the object (i.e. hide it). Returns silently if the
object is not currently drawn."""
if not self.canvas: return
if not self.canvas.isClosed():
self.canvas.delete(self.id)
if self.canvas.autoflush:
_root.update()
self.canvas = None
self.id = None
def move(self, dx, dy):
"""move object dx units in x direction and dy units in y
direction"""
self._move(dx,dy)
canvas = self.canvas
if canvas and not canvas.isClosed():
trans = canvas.trans
if trans:
x = dx/ trans.xscale
y = -dy / trans.yscale
else:
x = dx
y = dy
self.canvas.move(self.id, x, y)
if canvas.autoflush:
_root.update()
def _reconfig(self, option, setting):
# Internal method for changing configuration of the object
# Raises an error if the option does not exist in the config
# dictionary for this object
if option not in self.config:
raise GraphicsError(UNSUPPORTED_METHOD)
options = self.config
options[option] = setting
if self.canvas and not self.canvas.isClosed():
self.canvas.itemconfig(self.id, options)
if self.canvas.autoflush:
_root.update()
def _draw(self, canvas, options):
"""draws appropriate figure on canvas with options provided
Returns Tk id of item drawn"""
pass # must override in subclass
def _move(self, dx, dy):
"""updates internal state of object to move it dx,dy units"""
pass # must override in subclass
class Point(GraphicsObject):
def __init__(self, x, y):
GraphicsObject.__init__(self, ["outline", "fill"])
self.setFill = self.setOutline
self.x = x
self.y = y
def _draw(self, canvas, options):
x,y = canvas.toScreen(self.x,self.y)
return canvas.create_rectangle(x,y,x+1,y+1,options)
def _move(self, dx, dy):
self.x = self.x + dx
self.y = self.y + dy
def clone(self):
other = Point(self.x,self.y)
other.config = self.config.copy()
return other
def getX(self): return self.x
def getY(self): return self.y
class _BBox(GraphicsObject):
# Internal base class for objects represented by bounding box
# (opposite corners) Line segment is a degenerate case.
def __init__(self, p1, p2, options=["outline","width","fill"]):
GraphicsObject.__init__(self, options)
self.p1 = p1.clone()
self.p2 = p2.clone()
def _move(self, dx, dy):
self.p1.x = self.p1.x + dx
self.p1.y = self.p1.y + dy
self.p2.x = self.p2.x + dx
self.p2.y = self.p2.y + dy
def getP1(self): return self.p1.clone()
def getP2(self): return self.p2.clone()
def getCenter(self):
p1 = self.p1
p2 = self.p2
return Point((p1.x+p2.x)/2.0, (p1.y+p2.y)/2.0)
class Rectangle(_BBox):
def __init__(self, p1, p2):
_BBox.__init__(self, p1, p2)
def _draw(self, canvas, options):
p1 = self.p1
p2 = self.p2
x1,y1 = canvas.toScreen(p1.x,p1.y)
x2,y2 = canvas.toScreen(p2.x,p2.y)
return canvas.create_rectangle(x1,y1,x2,y2,options)
def clone(self):
other = Rectangle(self.p1, self.p2)
other.config = self.config.copy()
return other
class Oval(_BBox):
def __init__(self, p1, p2):
_BBox.__init__(self, p1, p2)
def clone(self):
other = Oval(self.p1, self.p2)
other.config = self.config.copy()
return other
def _draw(self, canvas, options):
p1 = self.p1
p2 = self.p2
x1,y1 = canvas.toScreen(p1.x,p1.y)
x2,y2 = canvas.toScreen(p2.x,p2.y)
return canvas.create_oval(x1,y1,x2,y2,options)
class Circle(Oval):
def __init__(self, center, radius):
p1 = Point(center.x-radius, center.y-radius)
p2 = Point(center.x+radius, center.y+radius)
Oval.__init__(self, p1, p2)
self.radius = radius
def clone(self):
other = Circle(self.getCenter(), self.radius)
other.config = self.config.copy()
return other
def getRadius(self):
return self.radius
class Line(_BBox):
def __init__(self, p1, p2):
_BBox.__init__(self, p1, p2, ["arrow","fill","width"])
self.setFill(DEFAULT_CONFIG['outline'])
self.setOutline = self.setFill
def clone(self):
other = Line(self.p1, self.p2)
other.config = self.config.copy()
return other
def _draw(self, canvas, options):
p1 = self.p1
p2 = self.p2
x1,y1 = canvas.toScreen(p1.x,p1.y)
x2,y2 = canvas.toScreen(p2.x,p2.y)
return canvas.create_line(x1,y1,x2,y2,options)
def setArrow(self, option):
if not option in ["first","last","both","none"]:
raise GraphicsError(BAD_OPTION)
self._reconfig("arrow", option)
class Polygon(GraphicsObject):
def __init__(self, *points):
# if points passed as a list, extract it
if len(points) == 1 and type(points[0]) == type([]):
points = points[0]
self.points = list(map(Point.clone, points))
GraphicsObject.__init__(self, ["outline", "width", "fill"])
def clone(self):
other = Polygon(*self.points)
other.config = self.config.copy()
return other
def getPoints(self):
return list(map(Point.clone, self.points))
def _move(self, dx, dy):
for p in self.points:
p.move(dx,dy)
def _draw(self, canvas, options):
args = [canvas]
for p in self.points:
x,y = canvas.toScreen(p.x,p.y)
args.append(x)
args.append(y)
args.append(options)
return GraphWin.create_polygon(*args)
class Text(GraphicsObject):
def __init__(self, p, text):
GraphicsObject.__init__(self, ["justify","fill","text","font"])
self.setText(text)
self.anchor = p.clone()
self.setFill(DEFAULT_CONFIG['outline'])
self.setOutline = self.setFill
def _draw(self, canvas, options):
p = self.anchor
x,y = canvas.toScreen(p.x,p.y)
return canvas.create_text(x,y,options)
def _move(self, dx, dy):
self.anchor.move(dx,dy)
def clone(self):
other = Text(self.anchor, self.config['text'])
other.config = self.config.copy()
return other
def setText(self,text):
self._reconfig("text", text)
def getText(self):
return self.config["text"]
def getAnchor(self):
return self.anchor.clone()
def setFace(self, face):
if face in ['helvetica','arial','courier','times roman']:
f,s,b = self.config['font']
self._reconfig("font",(face,s,b))
else:
raise GraphicsError(BAD_OPTION)
def setSize(self, size):
if 5 <= size <= 36:
f,s,b = self.config['font']
self._reconfig("font", (f,size,b))
else:
raise GraphicsError(BAD_OPTION)
def setStyle(self, style):
if style in ['bold','normal','italic', 'bold italic']:
f,s,b = self.config['font']
self._reconfig("font", (f,s,style))
else:
raise GraphicsError(BAD_OPTION)
def setTextColor(self, color):
self.setFill(color)
class Entry(GraphicsObject):
def __init__(self, p, width):
GraphicsObject.__init__(self, [])
self.anchor = p.clone()
#print self.anchor
self.width = width
self.text = tk.StringVar(_root)
self.text.set("")
self.fill = "gray"
self.color = "black"
self.font = DEFAULT_CONFIG['font']
self.entry = None
def _draw(self, canvas, options):
p = self.anchor
x,y = canvas.toScreen(p.x,p.y)
frm = tk.Frame(canvas.master)
self.entry = tk.Entry(frm,
width=self.width,
textvariable=self.text,
bg = self.fill,
fg = self.color,
font=self.font)
self.entry.pack()
#self.setFill(self.fill)
return canvas.create_window(x,y,window=frm)
def getText(self):
return self.text.get()
def _move(self, dx, dy):
self.anchor.move(dx,dy)
def getAnchor(self):
return self.anchor.clone()
def clone(self):
other = Entry(self.anchor, self.width)
other.config = self.config.copy()
other.text = tk.StringVar()
other.text.set(self.text.get())
other.fill = self.fill
return other
def setText(self, t):
self.text.set(t)
def setFill(self, color):
self.fill = color
if self.entry:
self.entry.config(bg=color)
def _setFontComponent(self, which, value):
font = list(self.font)
font[which] = value
self.font = tuple(font)
if self.entry:
self.entry.config(font=self.font)
def setFace(self, face):
if face in ['helvetica','arial','courier','times roman']:
self._setFontComponent(0, face)
else:
raise GraphicsError(BAD_OPTION)
def setSize(self, size):
if 5 <= size <= 36:
self._setFontComponent(1,size)
else:
raise GraphicsError(BAD_OPTION)
def setStyle(self, style):
if style in ['bold','normal','italic', 'bold italic']:
self._setFontComponent(2,style)
else:
raise GraphicsError(BAD_OPTION)
def setTextColor(self, color):
self.color=color
if self.entry:
self.entry.config(fg=color)
class Image(GraphicsObject):
idCount = 0
imageCache = {} # tk photoimages go here to avoid GC while drawn
def __init__(self, p, *pixmap):
GraphicsObject.__init__(self, [])
self.anchor = p.clone()
self.imageId = Image.idCount
Image.idCount = Image.idCount + 1
if len(pixmap) == 1: # file name provided
self.img = tk.PhotoImage(file=pixmap[0], master=_root)
else: # width and height provided
width, height = pixmap
self.img = tk.PhotoImage(master=_root, width=width, height=height)
def _draw(self, canvas, options):
p = self.anchor
x,y = canvas.toScreen(p.x,p.y)
self.imageCache[self.imageId] = self.img # save a reference
return canvas.create_image(x,y,image=self.img)
def _move(self, dx, dy):
self.anchor.move(dx,dy)
def undraw(self):
del self.imageCache[self.imageId] # allow gc of tk photoimage
GraphicsObject.undraw(self)
def getAnchor(self):
return self.anchor.clone()
def clone(self):
other = Image(Point(0,0), 0, 0)
other.img = self.img.copy()
other.anchor = self.anchor.clone()
other.config = self.config.copy()
return other
def getWidth(self):
"""Returns the width of the image in pixels"""
return self.img.width()
def getHeight(self):
"""Returns the height of the image in pixels"""
return self.img.height()
def getPixel(self, x, y):
"""Returns a list [r,g,b] with the RGB color values for pixel (x,y)
r,g,b are in range(256)
"""
value = self.img.get(x,y)
if type(value) == type(0):
return [value, value, value]
else:
return list(map(int, value.split()))
def setPixel(self, x, y, color):
"""Sets pixel (x,y) to the given color
"""
self.img.put("{" + color +"}", (x, y))
def save(self, filename):
"""Saves the pixmap image to filename.
The format for the save image is determined from the filname extension.
"""
path, name = os.path.split(filename)
ext = name.split(".")[-1]
self.img.write( filename, format=ext)
def color_rgb(r,g,b):
"""r,g,b are intensities of red, green, and blue in range(256)
Returns color specifier string for the resulting color"""
return "#%02x%02x%02x" % (r,g,b)
def test():
win = GraphWin()
win.setCoords(0,0,10,10)
t = Text(Point(5,5), "Centered Text")
t.draw(win)
p = Polygon(Point(1,1), Point(5,3), Point(2,7))
p.draw(win)
e = Entry(Point(5,6), 10)
e.draw(win)
win.getMouse()
p.setFill("red")
p.setOutline("blue")
p.setWidth(2)
s = ""
for pt in p.getPoints():
s = s + "(%0.1f,%0.1f) " % (pt.getX(), pt.getY())
t.setText(e.getText())
e.setFill("green")
e.setText("Spam!")
e.move(2,0)
win.getMouse()
p.move(2,3)
s = ""
for pt in p.getPoints():
s = s + "(%0.1f,%0.1f) " % (pt.getX(), pt.getY())
t.setText(s)
win.getMouse()
p.undraw()
e.undraw()
t.setStyle("bold")
win.getMouse()
t.setStyle("normal")
win.getMouse()
t.setStyle("italic")
win.getMouse()
t.setStyle("bold italic")
win.getMouse()
t.setSize(14)
win.getMouse()
t.setFace("arial")
t.setSize(20)
win.getMouse()
win.close()
if __name__ == "__main__":
test()
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........................................................................................................................ ● 本文作者：小麥苗，部分內容整理自網路，若有侵權請聯絡小麥苗刪除 ● 本文在itpub（ http://blog.itpub.net/26736162 ）、部落格園（ http://www.cnblogs.com/lhrbest ）和個人weixin公眾號（ xiaomaimiaolhr ）上有同步更新 ● 本文itpub地址： http://blog.itpub.net/26736162 ● 本文部落格園地址： http://www.cnblogs.com/lhrbest ● 本文pdf版、個人簡介及小麥苗雲盤地址： http://blog.itpub.net/26736162/viewspace-1624453/ ● 資料庫筆試面試題庫及解答： http://blog.itpub.net/26736162/viewspace-2134706/ ● DBA寶典今日頭條號地址： ........................................................................................................................ ● QQ群號： 230161599 （滿） 、618766405 ● weixin群：可加我weixin，我拉大家進群，非誠勿擾 ● 聯絡我請加QQ好友 （ 646634621 ） ，註明新增緣由 ● 於 2019-01-01 06:00 ~ 2019-01-31 24:00 在魔都完成 ● 最新修改時間：2019-01-01 06:00 ~ 2019-01-31 24:00 ● 文章內容來源於小麥苗的學習筆記，部分整理自網路，若有侵權或不當之處還請諒解 ● 版權所有，歡迎分享本文，轉載請保留出處 ........................................................................................................................ ● 小麥苗的微店 ： ● 小麥苗出版的資料庫類叢書 ： http://blog.itpub.net/26736162/viewspace-2142121/ ● 小麥苗OCP、OCM、高可用網路班 ： http://blog.itpub.net/26736162/viewspace-2148098/ ● 小麥苗騰訊課堂主頁 ： https://lhr.ke.qq.com/ ........................................................................................................................ 使用 weixin客戶端 掃描下面的二維碼來關注小麥苗的weixin公眾號（ xiaomaimiaolhr ）及QQ群（DBA寶典）、新增小麥苗weixin， 學習最實用的資料庫技術。
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來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/26736162/viewspace-2558369/，如需轉載，請註明出處，否則將追究法律責任。
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