Question

我正在尝试运行一个调用PIL的Python脚本（通过Pillow）。该脚本在我的MacBook上完美运行，但我希望它也可以在Windows上运行。我收到“解码器zip不可用”的错误（参见下面的完整输出）。搜索网络让我下载了zlib并重新安装Pillow（如this question中所述）。不幸的是，我得到了同样的错误。

我的问题是：
如何/在哪里安装zlib？我下载了一个zip文件，在zlib网站上找不到任何方向，也没有在其他地方找到。我尝试将解压缩的zlib文件夹放在带有Pillow的Python site-packages文件夹中。

我是否遗漏了会提供错误消息的其他内容？我很惊讶安装Pillow有多困难。

使用Windows 7，Python 2.7，目前从https://pypi.python.org/pypi/Pillow/2.7.0

的zip文件安装Pillow 2.7.0

脚本：（基本上它应该在窗口中打开图像并允许用户在图像上绘制矩形）。

import Tkinter as tk  
from Tkinter import *  
import tkMessageBox  
from PIL import ImageTk, Image  
import subprocess  

crop_regions = []
path = "D:/Temp/OCR_test/K111PS_V5_2"

class ImageCanvas(Frame):
# This class creates a Tkinter canvas and displays the first video frame grab
def __init__(self, master):
    Frame.__init__(self, master)
    self.grid_rowconfigure(0, weight=1)
    self.grid_columnconfigure(0, weight=1)
    self.canvas = Canvas(self, width=720, height=480, bd=0, highlightthickness=0)
    self.canvas.grid(row=0, column=0, sticky='nsew', padx=4, pady=4)


class ImgTk(tk.Tk):
# This function asks the user to select portions of the first video frame grab that contain data to OCR
# Coordinates of data field locations are saved as a global variable to be passed to the rest of the script
def __init__(self):
    tk.Tk.__init__(self)
    tkMessageBox.showinfo(
        message="On the following image, draw rectangles over the desired fields: \nlatitude, longitude, date, time and other \nin that order. \nClose the image window when finished")
    self.main = ImageCanvas(self)
    self.main.grid(row=0, column=0, sticky='nsew')
    self.c = self.main.canvas

    self.currentImage = {}
    self.load_imgfile(path + '/images/0029.png')

    self.c.bind('<ButtonPress-1>', self.click_down)
    self.c.bind('<B1-Motion>', self.click_drag)
    self.c.bind('<ButtonRelease-1>', self.rectangles)

def load_imgfile(self, filename):
    self.img = Image.open(filename)
    self.currentImage['data'] = self.img

    self.photo = ImageTk.PhotoImage(self.img)
    self.c.xview_moveto(0)
    self.c.yview_moveto(0)
    self.c.create_image(0, 0, image=self.photo, anchor='nw', tags='img')
    self.c.config(scrollregion=self.c.bbox('all'))
    self.currentImage['photo'] = self.photo
    self.title("Draw rectangles")

def click_down(self, event):
    self.anchor = (event.widget.canvasx(event.x),
                   event.widget.canvasy(event.y))
    self.item = None

def click_drag(self, event):
    selected_box = self.anchor + (event.widget.canvasx(event.x), event.widget.canvasy(event.y))
    if self.item is None:
        self.item = event.widget.create_rectangle(selected_box, outline="red3", width=2.1)
    else:
        event.widget.coords(self.item, *selected_box)

def rectangles(self, event):
    if self.item:
        self.click_drag(event)
        box = tuple((int(round(v)) for v in event.widget.coords(self.item)))
        roi = self.currentImage['data'].crop(box)  # region of interest
        lat = roi.size[0], ':', roi.size[1], ':', box[0], ':', box[1]
        lat = str(lat)
        lat = lat.replace(',', '')
        lat = lat.replace("'", '')
        lat = lat.replace(' ', '')
        global crop_regions
        crop_regions.append(lat)

app = ImgTk()
app.mainloop()

错误讯息：

Traceback (most recent call last):
  File "D:/Scripts/DaileyScripts/Python/OCR/PIL_test.py", line 81, in <module>
    app = ImgTk()
  File "D:/Scripts/DaileyScripts/Python/OCR/PIL_test.py", line 37, in __init__
self.load_imgfile(path + '/images/0029.png')
  File "D:/Scripts/DaileyScripts/Python/OCR/PIL_test.py", line 47, in load_imgfile
self.photo = ImageTk.PhotoImage(self.img)
  File "build\bdist.win-amd64\egg\PIL\ImageTk.py", line 115, in __init__
self.paste(image)
  File "build\bdist.win-amd64\egg\PIL\ImageTk.py", line 165, in paste
im.load()
  File "build\bdist.win-amd64\egg\PIL\ImageFile.py", line 200, in load
d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
  File "build\bdist.win-amd64\egg\PIL\Image.py", line 417, in _getdecoder
raise IOError("decoder %s not available" % decoder_name)
IOError: decoder zip not available

模块似乎不起作用，即我可以毫无错误地调用它们。

Answer 1

zlib在NDK中为already there。

我遇到了同样的问题。我有一个音符8（三星）。只需转到GitHub并从那里安装zlib，之后您就可以安装枕头了。

如何在Windows上安装zlib for Python 2.7 Pillow？

1 个答案: