希望会做的兄弟帮下忙，比较急

操作代码可以这么写：

import jieba
import shutil
path=input('输入文本目录路径以/结尾：')
f=open(path+'eng1.txt','r',encoding='utf-8')
txt=f.read()
lines = [x for x in txt.strip().split('\n') if x != '']
inp=input()
if inp=='1':
    words=jieba.cut(txt)
    words=[w for w in words if w.isalpha()]
    ws={}
    for w in words:
        ws[w]=ws.get(w,0)+1
    lst=sorted(ws.items(),key=lambda x:x[1],reverse=True)
    print(lst[:10])
    with open(path+'log.txt','w',encoding='utf-8') as fs:
        for x in lst:
            fs.write(x[0]+":"+str(x[1]))
            fs.write('\n')
elif inp=='2':
    shutil.copy('eng1.txt','./helpother/eng2.txt')

elif inp=='3':
    print(len(lines))
elif inp=='4':
    print(max([len(l) for l in lines]), min([len(l) for l in lines]))
elif inp=='5':
    with open(path+'eng1.txt', 'a', encoding='utf-8') as fa:
        fa.write('\nhello world')
        print('hello world')
elif inp=='6':
    f.close()
    print('操作结束')
else:
    print('无效字符')

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