1.輸入一行字元，分別統計出其中的數字、字母、空行和其他字元的個數；

#encoding = utf-8
def get_result():
    command = input("enter the lines:")
    digits_arr,alpha_arr,space_arr,others_arr = [],[],[],[]
    for i in command:
        if i.isdigit():
            digits_arr.append(i)
        elif i.isalpha():
            alpha_arr.append(i)
        
 
elif i.isspace():
            space_arr.append(i)
        else:
            others_arr.append(i)
    return len(digits_arr),len(alpha_arr),len(space_arr),len(others_arr)
            
print(get_result())

2.求 s= a+aa+aaa+aaaa+aa....aa的s的值，其中a是 一個數字

#encoding = utf-8
def get_result(a,n):
    res = 0
    
 
for i in range(1,n):
        res += int(str(a) * i)
    return res
            
print(get_result(5,6))

3.列印檔案a.txt的檔案路徑

#encoding = utf-8
def get_result(path):
    res = []
    import os
    for root,dirs,files in os.walk(path):
        for file in files:
            if file == "a.txt":
                res.append(os.path.join(root,file))
    
 
return res
            
print(get_result(r"D:\workspace"))

4.求一個檔案路徑下所有檔案的數量

#encoding = utf-8
def get_result():
    path = r"D:\workspace\py"
    import os
    os.chdir(path)
    res = []
    for file in os.listdir():
        if os.path.isfile(os.path.join(path,file)):
            res.append(file)
    return len(res)
            
print(get_result())

5.找出txt檔案的個數

#encoding = utf-8
def get_result():
    path = r"D:\workspace\py"
    import os
    os.chdir(path)
    res = []
    for file in os.listdir():
        if os.path.isfile(os.path.join(path,file)):
            if os.path.splitext(file)[1] == ".txt":
                res.append(file)
    return len(res)
            
print(get_result())

6.檢視目錄下的所有檔案

#encoding = utf-8
def get_result():
    path = r"D:\workspace\py"
    import os
    os.chdir(path)
    for file in os.listdir():
        if os.path.isfile(os.path.join(path,file)):
            print(file)
            
print(get_result())

7.找出一個目錄及子目錄下的所有檔名字，不含字尾

#encoding = utf-8
def get_result():
    path = r"D:\workspace\py"
    import os
    res = []
    for root,dirs,files in os.walk(path):
        for file in files:
            if os.path.isfile(os.path.join(root,file)):
                file_name = os.path.splitext(file)[0]
                res.append(file_name)
    return res
            
print(get_result())

8.輸入一個字母判斷是星期幾，如果第一個字母相同就判斷第二個字

#encoding = utf-8
def get_result():
    weeks = ["Monday","Tuesday","Wednesday","Thursday",
             "Friday","Saturday","Sunday"]
    while 1:
        first_command = input("enter the first letter:")
        if first_command == ".":
            print("bye")
            break
        tmp = []
        for i in weeks:
            if first_command.lower() == i[0].lower():
                tmp.append(i)
        if tmp:    
            if len(tmp) == 1:
                print(tmp[0])
                    
            if len(tmp) > 1:
                second_command = input("enter the second letter:")
                for j in tmp:
                    if second_command.lower() == j[1].lower():
                        print(j)
        else:
            print("輸入指令不在查詢範圍，請重新輸入")
         
get_result()

8.兩個 3 行 3列的矩陣，實現其對應位置的資料相加，並返回一個矩陣

#encoding = utf-8
def get_result(x,y):
    res = [[0,0,0] for i in range(3)]
    for i in range(len(x)):
        for j in range(len(y)):
            res[i][j] = x[i][j] + y[i][j]
    return res
             
x = [[12,7,3],[4,5,6],[7,8,9]]
y = [[5,8,1],[6,7,3],[4,5,9]]
print(get_result(x,y))

9.把所有的輸入引數中的字母個數統計出來

#encoding = utf-8
def get_result():
    res_count = 0
    command = input("enter the command:")
    for i in command:
        if (i >= "a" and i <= "z") or (i >= "A" and i <= "Z"):
            res_count += 1
    return "字母個數:{}".format(res_count)

print(get_result())

10.你輸入的引數全部都是數字，計算所有數字引數的和

#encoding = utf-8
def get_result():
    command = input("enter the command:")
    return sum([int(x) for x in command])

print(get_result())

11.輸入一個數字，如果是數字退出，不是數字讓使用者繼續輸入

#encoding = utf-8
def get_result():
    while 1:
        command = input("enter the command:")
        if command.isdigit():
            print("bye")
            break

get_result()

12.程式碼行統計工具

#encoding = utf-8
def get_result():
    import os
    path = r"D:\workspace\file\delete"
    os.chdir(path)
    res = []
    for i in os.listdir():
        if os.path.isfile(os.path.join(path,i)):
            if os.path.splitext(i)[1] in [
                ".java",".php",".py"]:
                with open(i,encoding = "utf-8") as fp1:
                    for line in fp1:
                        if line:
                            if line[0] not in  "\n\v\r\f\t":
                                res.append(line)
    return len(res)
                        
print(get_result())