2019-11-23

print("python")

a = "python"

print(a)
print(a[0])

print("python"[0])



print("python"[3])


print("python"[-1])


str_ = 'python'

print(str_[0:6])

print(str_[0:])

print(str_[:6])

print(str_[:])
print(str_[-6:-1])
print(str_[-6:])
print(str_[:])
print(str_[-1:-5])