字符串练习
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#Author:donghuiya
name="my name is {name} and i am {year}"
print(name.capitalize())
print(name.count("n"))
print(name.center(50,"-"))
print(name.endswith("ex"))
print(name.expandtabs(tabsize=30))
print(name.find("n"))
print(name[name.find("n"):9])
print(name.format(name='alex',year=23))
print(name.format_map({'name':'alex','year':23}))
print('+'.join(['1','2','3']))
print(name.ljust(50,'*'))
print("\n1".lstrip())
p=str.maketrans("abcdef",'123456')
print("alex li".translate(p))
print("alex li".replace('l','L',1))
print('1+2+3+4'.split('+'))
print(name.swapcase())
name="my name is {name} and i am {year}"
print(name.capitalize())
print(name.count("n"))
print(name.center(50,"-"))
print(name.endswith("ex"))
print(name.expandtabs(tabsize=30))
print(name.find("n"))
print(name[name.find("n"):9])
print(name.format(name='alex',year=23))
print(name.format_map({'name':'alex','year':23}))
print('+'.join(['1','2','3']))
print(name.ljust(50,'*'))
print("\n1".lstrip())
p=str.maketrans("abcdef",'123456')
print("alex li".translate(p))
print("alex li".replace('l','L',1))
print('1+2+3+4'.split('+'))
print(name.swapcase())
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