import subprocess
p = subprocess .run (
r'''echo -e 'FROM busybox\n RUN echo "hello world, from echo -e"' | nl''' ,
shell= True , check= True )
q = subprocess .run (
r'''printf '%s\n ' 'FROM busybox' 'RUN echo "hello world, from printf"' | nl''' ,
shell= True , check= True )
r = subprocess .run ( [ 'nl' ] ,
input = 'FROM busybox\n RUN echo "hello world, from Python with input="' ,
text= True , check= True )
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