如何保存PDF

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如何将dfa保存为pdf？ 到目前为止，我已经能够将每个元素分别保存在每个文件中。现在如何将整个文件另存为单个pdf？

dfa = pd.DataFrame({'STREAM':['EAGLE','HAWK','HAWK','HAWK','EAGLE','HAWK','EAGLE'],'MAT':['A','D','F','D','C','C','E'],'KIS':['B','D','E','D','A','C','D'],'GEO':['B','C','E','E','F','A','B']})

dfa.to_csv('results.csv',index=False)

students_data = csv.reader(open("results.csv", 'r'))

for row in students_data:
    STREAM = row[0]
    MAT = row[1]
    GEO = row[2]
    KIS = row[3]

c = canvas.Canvas(MAT +".pdf")
c.drawString(60, 700, "STREAM:  " + STREAM)
c.drawString(60, 600, "MAT:  " + MAT)
c.drawString(60, 500, "KIS:  " + KIS)
c.drawString(60, 400, "GEO:  " + GEO)
c.save()