piRNA plots python error

[rberrens]

I am tryng to run pipipes small on trimmed small RNAseq data but
When running the pipeline in get the following error:
Calls: draw_smRNA_percentage -> read.table
Execution halted
File "/usr/people/bioc1647/piPipes/bin/piPipes_nuc_percentage.py", line 33
print str (A) + '\t' + str (C) + '\t' + str (G) + '\t' + str (T)
^
SyntaxError: invalid syntax
File "/usr/people/bioc1647/piPipes/bin/piPipes_nuc_percentage.py", line 33
print str (A) + '\t' + str (C) + '\t' + str (G) + '\t' + str (T)
^
SyntaxError: invalid syntax
File "/usr/people/bioc1647/piPipes/bin/piPipes_nuc_percentage.py", line 33
print str (A) + '\t' + str (C) + '\t' + str (G) + '\t' + str (T)
^
SyntaxError: invalid syntax
File "/usr/people/bioc1647/piPipes/bin/piPipes_nuc_percentage.py", line 33
print str (A) + '\t' + str (C) + '\t' + str (G) + '\t' + str (T)
^
SyntaxError: invalid syntax

Warning messages:
1: axis.ticks.margin is deprecated. Please set margin property of axis.text instead
2: panel.margin is deprecated. Please use panel.spacing property instead
3: legend.margin must be specified using margin(). For the old behavior use legend.spacing