我如何以此绘制饼图给数据框熊猫

Question

我目前有这个数据框，我想从中绘制一个熊猫饼图。但是，我尝试了一下，但无济于事。下面是我尝试尝试使用的代码。

/* SAME AS BEFORE :) */

#include <errno.h> /* for errno */
#include <stdio.h> /* for printf() and others */
#include <stdlib.h> /* for many standard functions */
#include <string.h> /* for strerror() */
#include <sys/wait.h> /* for wait() */
#include <unistd.h> /* for getpid() */
#include <getopt.h> /* for getopt() */

pid_t pid;

/* create the format string for printf with a pretty header,
 * showing pid, source file, source line, source function,
 * and the provided format string. */
#define F(_fmt) "[pid=%d]:"__FILE__":%d:%s: "_fmt,pid,__LINE__,__func__

/* fatal error macro */
#define ERROR(str) do {\
                fprintf(stderr, F("%s: %s\n"),\
                        (str), strerror(errno));\
                exit(EXIT_FAILURE);\
        } while(0)

int main(int argc, char** argv)
{
        char *program = "./a.out";  /* defaults to a.out in local dir */
        int opt;

        /* getopt use.  See getopt(3) for instructions */
        while ((opt = getopt(argc, argv, "r:")) != EOF) {
                switch (opt) {
                case 'r': program = optarg; break;
                }
        }

        /* shift all the processed parameters out */
        argc -= optind; argv += optind;

        /* get our pid to use in traces */
        pid = getpid();

        if (argc == 1) {
                /* only one parameter, save the fork() call */
                printf(F("about to exec: %s %s\n"),
                        program, argv[0]);
                execlp(program,
                        program, argv[0], NULL);
                ERROR("execlp()");
                /* NOTREACHED */
        } else {
                pid_t chld;
                int i;
                for (i = 0; i < argc; i++) {
                        chld = fork();
                        if (chld < 0) {
                                ERROR("fork()");
                                /* NOTREACHED */
                        }
                        if (!chld) { /* child */
                                printf(F("about to call: %s %s\n"),
                                        program, argv[i]);
                                execlp(program,
                                        program, argv[i], NULL);
                                ERROR("execlp()");
                                /* NOTREACHED */
                        }
                }
                /* NOW, AFTER ALL FORKS/EXECS HAVE BEEN DONE,
                 * JUST DO ALL THE WAITS.  wait() gives an
                 * error if no children exist to wait for, so
                 * we wait() until we get an error here.  */
                int status;
                while ((chld = wait(&status)) > 0) {
                        /* just change this printf to a continue;
                         * if you don't want to print the result. */
                        printf(F("wait() => child %d (status = %d)\n"),
                                chld, status);
                }
        }
        printf("%d: END OF PROGRAM\n", pid);
}

这是我得到的数据框：