Use print() function in both Python 2 and Python 3 (#3440)
Use print() function in both Python 2 and Python 3 (#3440)

Discovered via: __flake8 . --count --select=E9,F63,F72,F82 --show-source --statistics__

Legacy __print__ statements are syntax errors in Python 3 but __print()__ function works as expected in both Python 2 and Python 3.
dmlc/tvm,sxjscience/tvm,dmlc/tvm,Laurawly/tvm-1,dmlc/tvm,sxjscience/tvm,sxjscience/tvm,Laurawly/tvm-1,Huyuwei/tvm,tqchen/tvm,dmlc/tvm,tqchen/tvm,Laurawly/tvm-1,tqchen/tvm,sxjscience/tvm,Laurawly/tvm-1,Laurawly/tvm-1,tqchen/tvm,Huyuwei/tvm,tqchen/tvm,sxjscience/tvm,dmlc/tvm,Huyuwei/tvm,tqchen/tvm,sxjscience/tvm,Huyuwei/tvm,dmlc/tvm,sxjscience/tvm,Huyuwei/tvm,Laurawly/tvm-1,tqchen/tvm,tqchen/tvm,Laurawly/tvm-1,dmlc/tvm,tqchen/tvm,sxjscience/tvm,dmlc/tvm,Huyuwei/tvm,dmlc/tvm,tqchen/tvm,Huyuwei/tvm,sxjscience/tvm,Huyuwei/tvm,Huyuwei/tvm,Laurawly/tvm-1,Laurawly/tvm-1,Laurawly/tvm-1