Fix python 2.7 build
Fix python 2.7 build

eneas193933/rust-cpython,naufraghi/rust-cpython,fivejjs/rust-cpython,tempbottle/rust-cpython,dgrunwald/rust-cpython,naufraghi/rust-cpython,naufraghi/rust-cpython,dgrunwald/rust-cpython,ehiggs/rust-cpython,novocaine/rust-cpython