Day 3 字符串习题

字符串的操作方法

作业

# n = '  aleX lenb  '
# print(n.strip())
#
# name = 'aleX leNb'
# print(name.lstrip('al'))
#
# print(name.rstrip('Nb'))
#
# print(name[1:-1])
#
# print(name.startswith('al'))
#
# print(name.endswith('Nb'))
#
# print(name.replace('l', 'p'))
#
# print(name.replace('l', 'p', 1))
#
# print(name.split('l'))
#
# print(name.split('l', 1))
#
# print(name.upper())
#
# print(name.lower())
#
# print(name.capitalize())
#
# print(name.title())
#
# print(name.count('l'))
#
# print(name.count('l', 0,4))    # 前四位出现了几次
#
# print(name.index('N'))
#
# print(name.find('N'))
#
# print(name.find('X le'))
#
# print(name[1])
#
# print(name[:3])
#
# print(name[-2:])
#
# print(name.find('e'))
#


# string = input('请输入您的序列: ')
# print('除去最后字符的序列为' + string[:-1])

'''
s = '132a4b5c'
s1 = s[0]+s[2]+s[1]
print(s1)
s2 = s[3:6]
print(s2)
s3 = s[::2]
print(s3)
s4 = s[1:-1:2]
print(s4)
s5 = s[-1]
print(s5)
s6 = s[-3::-2]
print(s6)

'''

'''
s = 'asdfer'
for i in s:
    print(i)

a = 0
while a < len(s):
    print(s[a])
    a += 1
'''

'''
# 整数加法计算器

content = input('请输入内容: ').strip()

# conl = content.split('+')
# num = 0
# for i in conl:
#     num += int(i)
#
# print(num)

index = content.find('+')
a = content[:index]
b = content[index+1:]
print(int(a) + int(b))
'''

# 计算用户输入内容有几个整数
content = input('请输入>>>: ')
num = 0
for i in content:
    if i.isdigit():
        num += 1

print(num)