print("hoc vien python")
print("hoc vien \n python")

taisao = "hoc vien python"
print(taisao)
print(taisao+"cui bap")

taisao = "Hoc Vien Python"
print(taisao.lower())

taisao = "hoc vien python"
print(taisao.upper())

taisao = "hoc vien python"
print(taisao.upper().isupper())


taisao = "hoc vien python"
print(len(taisao))

taisao = "hoc vien python"
print(taisao[4])

taisao = "hoc vien python"
print(taisao.index("c"))

taisao = "hoc vien python"
print(taisao.replace("hoc vien" , " tap lam" ))

e281a1ab1b7862c5b018a6be00282dd16ac1ef9c
<mask token>

print('hoc vien python')
print("""hoc vien 
 python""")
<mask token>
print(taisao)
print(taisao + 'cui bap')
<mask token>
print(taisao.lower())
<mask token>
print(taisao.upper())
<mask token>
print(taisao.upper().isupper())
<mask token>
print(len(taisao))
<mask token>
print(taisao[4])
<mask token>
print(taisao.index('c'))
<mask token>
print(taisao.replace('hoc vien', ' tap lam'))

print('hoc vien python')
print("""hoc vien 
 python""")
taisao = 'hoc vien python'
print(taisao)
print(taisao + 'cui bap')
taisao = 'Hoc Vien Python'
print(taisao.lower())
taisao = 'hoc vien python'
print(taisao.upper())
taisao = 'hoc vien python'
print(taisao.upper().isupper())
taisao = 'hoc vien python'
print(len(taisao))
taisao = 'hoc vien python'
print(taisao[4])
taisao = 'hoc vien python'
print(taisao.index('c'))
taisao = 'hoc vien python'
print(taisao.replace('hoc vien', ' tap lam'))

print("hoc vien python")
print("hoc vien \n python")

taisao = "hoc vien python"
print(taisao)
print(taisao+"cui bap")

taisao = "Hoc Vien Python"
print(taisao.lower())

taisao = "hoc vien python"
print(taisao.upper())

taisao = "hoc vien python"
print(taisao.upper().isupper())


taisao = "hoc vien python"
print(len(taisao))

taisao = "hoc vien python"
print(taisao[4])

taisao = "hoc vien python"
print(taisao.index("c"))

taisao = "hoc vien python"
print(taisao.replace("hoc vien" , " tap lam" ))
