a = 'I'
b = 'like'
c = 'python'
print("'", a, b, c, "'")
result:
' I like python '
s = ' sdghHhf '
s1 = s.strip()
print(s1)
s2 = s1.upper()
s3 = s1.lower()
print(s2, s3)
s4 = s1.find('h')
print(s4)
result:
sdghHhf
SDGHHHF sdghhhf
3
x = 'I {} python'
x1 = x.format('like')
x2 = x.replace('{}', 'like')
print(x1)
print(x2)
result:
I like python
I like python
capital = '人民币100万元'
print(len(capital))
print(capital.isdigit())
result:
8
False
