#encoding=utf-8
import os.path
class FileInfo(object):
    def __init__(self,file_path,encoding_type="utf-8"):
        self.file_path=file_path
        self.encoding_type=encoding_type
        while 1:
            if not os.path.exists(self.file_path):
                self.file_path=input("請輸入正確的路徑:
 
")
            else:
                break
    def get_file_content(self):
        content=""
        with open(self.file_path,encoding=self.encoding_type) as fp:
            for i in fp:
                for j in i:
                    content+=j
        return content
        
    """統計檔案中的非空白字元個數"""
 

    def count_not_space_str(self):
        count=0
        content=self.get_file_content()
        for i in content:
            if not i.isspace():
                count+=1
        return count
        
    """統計檔案中的數字字元個數"""
    def count_number_str(self):
        count=0
        content=self.get_file_content()
        
 
for i in content:
            if i>='0' and i<='9':
                count+=1
        return count
        
    """統計檔案中的空白字元個數"""
    def count_space_str(self):
        count=0
        content=self.get_file_content()
        for i in content:
            if i.isspace():
                count+=1
        return count
        
    """統計檔案中的行數"""
    def count_lines(self):
        count=0
        content=self.get_file_content()
        for i in content.split("\n"):
            count+=1
        return count
        
class Advanced_FileInfo(FileInfo):
    """高階的檔案資訊處理類"""
    def __init__(self,file_path,encoding_type="utf-8"):
        FileInfo.__init__(self,file_path,encoding_type="utf-8")
        
    def print_file_info(self):
        print("檔案的統計資訊如下：")
        print("檔案中包含的數字數量:%s" %self.count_number_str())
        print("檔案中包含的非空白字元數量:%s" %self.count_not_space_str())
        print("檔案中包含的空白字元數量:%s" %self.count_space_str())
        print("檔案中包含的行數:%s" %self.count_lines())

fi = Advanced_FileInfo("e:\\b.txt")  
fi.print_file_info()

執行結果：

E:\workspace-python\test>py -3 b.py
檔案的統計資訊如下：
檔案中包含的數字數量:19
檔案中包含的非空白字元數量:42
檔案中包含的空白字元數量:9
檔案中包含的行數:7