python - 在python中将字符串转换为具有精确间距的pdf

Question

我有一个字符串，其中的文本以我希望的方式显示。这是一个ascii艺术项目。我想将此文本转换为 pdf，以便我可以在当地的印刷店打印带有文本的海报。

字体需要固定宽度，并且没有标签或类似的东西。行以 '\n' 字符结尾。有几个空格字符。

图像宽数百字，高数百字。因此，它不适合典型页面的空间。

我如何在python中做到这一点？

Answer 1

尝试模块pyPdf，可能会为您解决问题！

或pyfPdf，允许您在创建新 PDF 文件时设置字体（setFont 示例）

从pyfPdf 教程页面：

from fpdf import FPDF

pdf=FPDF()
pdf.add_page()
pdf.set_font('Courier','B',16)
pdf.cell(40,10,'Hello World!')
pdf.output('tuto1.pdf','F')

Answer 2

There are several more methods which could create a printable file from your ASCII art.

First, ImageMagick:

To demonstrate the method...

• ...first, create a text file named my.mvg and put the following content in:

  text 8,8 "
  
      _    ____   ____ ___ ___        _         _   
     / \  / ___| / ___|_ _|_ _|      / \   _ __| |_ 
    / _ \ \___ \| |    | | | |_____ / _ \ | '__| __|
   / ___ \ ___) | |___ | | | |_____/ ___ \| |  | |_ 
  /_/   \_\____/ \____|___|___|   /_/   \_\_|   \__|
  
  "
  

• ...next, run one of these commands:

  convert                 \
    -font "Courier"       \
    -size 800x200 xc:none \
    -box yellow           \
    -pointsize 12         \
    -gravity center       \
    -draw @my.mvg         \
     my-ascii-art.pdf
  

  to get a PDF as output file, or

  convert                           \
    -font "Liberation-Mono-Regular" \
    -size 800x200 xc:none           \
    -box orange                     \
    -pointsize 14                   \
    -gravity center                 \
    -draw @my.mvg                   \
     my-ascii-art.png
  

  for PNG output. Of course for each of the two commands you can play with -size and -box and -pointsize to your heart's contents...

• You may need to remove the \n character from your line ends, though...

• Note the ImageMagick method will create raster graphics, even if the output is PDF (and probably rather large files).**

Second, a2ps + Ghostscript:

To demonstrate this method...

• ...first, create a text file named henryb.txt with this content:

                   _   
    |_| _ ._ ._   |_)  
    | |(/_| || \/ |_)o 
               /       
  

• ...next, run this command to let a2ps and Ghostscript cooperate to create a PDF file:

  a2ps                      \
    --output=-              \
    --columns=1             \
    --borders=0             \
    --no-header             \
    --landscape             \
    --medium=a5             \
      henryb.txt            \
  |                         \
  gs                        \
    -o henryb.pdf           \
    -sDEVICE=pdfwrite       \
    -g1000x2500             \
    -dAutoRotatePages=/None \
    -
  

  or, for PNG output:

  a2ps                      \
    --output=-              \
    --columns=1             \
    --borders=0             \
    --no-header             \
    --landscape             \
    --medium=a5             \
      henryb.txt            \
  |                         \
  gs                        \
    -o henryb.png           \
    -sDEVICE=pngalpha       \
    -g100x250               \
    -
  

  (-gNNNxMMM gives the output dimensions in pixels. Ghostscript by default uses 720 pixels per inch for PDF distance calculations, but 72 ppi for raster image calculations, unless overridden with the -rNNN resolution setting...)

Third, enscript + Ghostscript:

To demonstrate this method...

• ...first, create a text file named henryb-2.txt with this content:

  m    m                                    mmmmm        
  #    #  mmm   m mm    m mm  m   m         #    #       
  #mmmm# #"  #  #"  #   #"  " "m m"         #mmmm"       
  #    # #""""  #   #   #      #m#          #    #       
  #    # "#mm"  #   #   #      "#           #mmmm"   #   
                               m"                        
                              ""                         
  

• ...next, run this command to let enscript and Ghostscript cooperate to create a PDF file:

  enscript                  \
    --output=-              \
    --columns=1             \
    --no-header             \
    --landscape             \
    --media=A5              \
      henryb-2.txt          \
  |                         \
  gs                        \
    -o henryb-2.pdf         \
    -sDEVICE=pdfwrite       \
    -g1500x4000             \
    -
  

  or, for PNG output:

  enscript                  \
    --output=-              \
    --columns=1             \
    --no-header             \
    --landscape             \
    --media=A5              \
      henryb-2.txt          \
  |                         \
  gs                        \
    -o henryb-2.png         \
    -sDEVICE=pngalpha       \
    -g150x400               \
    -
  

Answer 3

试试报告实验室 它有一些很酷的功能，比如

1. 支持嵌入式 Type-1 或 TTF 字体
2. 支持亚洲、希伯来和阿拉伯字符
3. 支持任何流行格式的位图图像
4. 支持矢量图形