定义函数相关内容

# 计算数字,字母,空格和其他内容的个数:
"""
def func():
    shuzi = 0
    zimu = 0
    kongge = 0
    qita = 0
    a = input("请输入内容:")
    for i in a:
        if i.isdigit():
            shuzi += 1
        elif i.isalpha():
            zimu += 1
        elif i.isspace():
            kongge += 1
        else:
            qita += 1
    return shuzi, zimu, kongge, qita
a, b, c, d = func()
print("数字有%d个,字母有%d个,空格有%d个,其他有%d个." % (a, b, c, d))
"""

# 接收两个数字,返回较大的一个
# 方法1
"""
def func(a,b):
    a = int(input(‘请输入第一个数字:‘))
    b = int(input(‘请输入第二个数字:‘))
    if a > b:
        return a
    else:
        return b
print(func())
"""
# 方法2
"""
def func(a, b):
    c = a if a > b else b
    print(c)
func(5, 9)
"""

# 检查传入字典的每一个value的长度,大于2则仅保留前两个长度的内容,返回.
"""
def func(a):
    new_dic = {}
    for k,v in dic.items():
        if len(v)>2:
            new_dic[k] = v[:2]
        else:
            new_dic[k] = v
    return new_dic
dic = {‘k1‘:‘v1v1‘,‘k2‘:[11,22,33]}
result = func(dic)
print(result)
"""

# 传入列表,传出字典,键值对为索引位置:项
"""
def func(lst):
    dic = {}
    for i in range(len(lst)):
        dic[i] = lst[i]
    return dic
lst = [1,2,3]
print(func(lst))
"""

# 接收四个参数,姓名,性别,年龄,学历,将内容追加到student_msg文件中.
"""
def func(name,sex,age,edu):
    f = open(‘student.msg‘,mode=‘a‘,encoding="utf-8")
    f.write(name+‘-‘+sex+‘-‘+age+‘-‘+edu+‘\n‘)
    f.flush()
    f.close()

n = ‘zjx‘
s = ‘男‘
a = ‘24‘
x = ‘bk‘
func(n,s,a,x)
"""

# 前一题升级,持续输入,q或Q退出,性别默认男,遇到女则输出女.
"""
def func(name,age,edu,sex=‘男‘):
    f = open(‘student.msg‘,mode=‘a‘,encoding="utf-8")
    f.write(name+‘-‘+sex+‘-‘+age+‘-‘+edu+‘\n‘)
    f.flush()
    f.close()
while 1:
    q = input(‘退出请按Q:‘)
    if q.upper() == ‘Q‘:
        break
    n = input(‘输入姓名:‘)
    s = input(‘输入性别:‘)
    a = input(‘输入年龄:‘)
    x = input(‘输入学历:‘)
    if s == ‘‘:
        func(n,a,x)
    else:
        func(n,a,x,s)
"""

定义函数相关内容

原文：https://www.cnblogs.com/zjx1/p/10640018.html