ReportLab的应用

儿子开学要上二年级啦，根据老师的要求，要训练掌握100内的加减运算。

使用ReportLab给儿子做了一个简单的出题工具。代码不多贴如下备份。

共分为三个文件：

page_a4.py --》A4纸相关的信息。

###################################################### 

A4_width = 595

A4_height = 841

A4_margin = 20

A4_4_column_width = (A4_width - A4_margin*2)/4

font_height = 16

row_margin = font_height*1.1

A4_4_row_count = (A4_height - A4_margin*2)/(font_height + row_margin)

def get_row_column_start_point(row,column):

x = 0

y = 0

first_row_y = A4_height - A4_margin - font_height

y = first_row_y - (row_margin + font_height)* row

first_column_x = A4_margin

x = first_column_x + A4_4_column_width * column

return (x,y)

if __name__ == '__main__':

print get_row_column_start_point(1,2)

########################################################

expression.py -----随机生成的运算式。

 ########################################################

 import random

def get_expression():

x = random.randint(0,99)

y = random.randint(0,99)

z = random.randint(0,1)

if(z == 1):

while(x+y > 100):

x = random.randint(0,99)

y = random.randint(0,99)

strExpression = str(x) + " + " + str(y) + " = "

else:

if(x > y):

strExpression = str(x) + " - " + str(y) + " = "

else:

strExpression = str(y) + " - " + str(x) + " = "

return strExpression

if __name__ == '__main__':

print get_expression()

#############################################################

 import_pdf.py ---输出pdf文件。

 #############################################################

import page_a4

import expression

def make_half(c,start_row):

c.setFont("Helvetica", page_a4.font_height)

for i in range(12):

if (i == 11):

x,y = page_a4.get_row_column_start_point(i + start_row,0)

c.line(x,y + page_a4.font_height,x+page_a4.A4_4_column_width*4,y + page_a4.font_height)

elif(i==0):

x,y = page_a4.get_row_column_start_point(i + start_row,0)

c.line(x,y-2,x+page_a4.A4_4_column_width*4,y-2)

x,y = page_a4.get_row_column_start_point(i + start_row,0)

c.drawString(x,y,"Name:")

x,y = page_a4.get_row_column_start_point(i + start_row,1)

c.drawString(x,y,"Date:")

x,y = page_a4.get_row_column_start_point(i + start_row,2)

c.drawString(x,y,"Time:")

x,y = page_a4.get_row_column_start_point(i + start_row,3)

c.drawString(x,y,"Score:")

else:

for j in range(4):

x,y = page_a4.get_row_column_start_point(i + start_row,j)

strExpression = expression.get_expression()

c.drawString(x,y,strExpression)

def make_page(c):

row_count = page_a4.A4_4_row_count

off_set = row_count - 12*2

#print row_count

make_half(c,0)

make_half(c,12+ off_set)

c.showPage()

def import_pdf(strFileName):

from reportlab.pdfgen import canvas

c = canvas.Canvas(strFileName)

for i in range(10):

make_page(c)

c.save()

if __name__ == '__main__':

import_pdf("plus_minus.pdf")

##############################################################

效果如下：