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我在使用pyPdf合并两个PDF文件时遇到问题.当我运行以下代码时,水印(page1)看起来很好,但page2已顺时针旋转90度.

有什么想法发生了什么？

from pyPdf import PdfFileWriter, PdfFileReader

# PDF1: A4 Landscape page created in photoshop using PdfCreator, 
input1 = PdfFileReader(file("base.pdf", "rb"))
page1 = input1.getPage(0)

# PDF2: A4 Landscape page, text only, created using Pisa (www.xhtml2pdf.com)
input2 = PdfFileReader(file("text.pdf", "rb"))
page2 = input2.getPage(0)

# Merge
page1.mergePage(page2)

# Output
output = PdfFileWriter()
output.addPage(page1)
outputStream = file("output.pdf", "wb")
output.write(outputStream)
outputStream.close()