1 Python版本导致的异常

/root/Python-3.5.7/Modules/_pickle.c: In function ‘PyMemoTable_Copy’:

/root/Python-3.5.7/Modules/_pickle.c:677:5: error: ‘for’ loop initial declarations are only allowed in C99 mode

     for (size_t i = 0; i < self->mt_allocated; i++) {

     ^

/root/Python-3.5.7/Modules/_pickle.c:677:5: note: use option -std=c99 or -std=gnu99 to compile your code

/root/Python-3.5.7/Modules/_pickle.c: In function ‘_pickle_PicklerMemoProxy_copy_impl’:

/root/Python-3.5.7/Modules/_pickle.c:4207:5: error: ‘for’ loop initial declarations are only allowed in C99 mode

     for (size_t i = 0; i < memo->mt_allocated; ++i) {

     ^

/root/Python-3.5.7/Modules/_pickle.c: In function ‘Unpickler_set_memo’:

/root/Python-3.5.7/Modules/_pickle.c:6794:9: error: ‘for’ loop initial declarations are only allowed in C99 mode

         for (size_t i = 0; i < new_memo_size; i++) {

         ^

/root/Python-3.5.7/Modules/_pickle.c:6842:9: error: ‘for’ loop initial declarations are only allowed in C99 mode

         for (size_t i = new_memo_size - 1; i != SIZE_MAX; i--) {

         ^

　　 ‘for’ loop initial declarations are only allowed in C99 mode 这段话的意思是 只允许再C99模式中

2 所以换个python版本，就不再报错了（换了3.6版本）

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