x=list(raw_input("Zadej text: "))
if "a" in x:
def nahrazeni_a():
for znak in x:
if znak=="a":
p=x.index("a")
x[p]="b"
if "b" in x:
def nahrazeni_b():
for znak in x:
if znak=="b":
p=x.index("b")
x[p]="c"
if "c" in x:
def nahrazeni_c():
for znak in x:
if znak=="c":
p=x.index("c")
x[p]="d"
if "d" in x:
def nahrazeni_d():
for znak in x:
if znak=="d":
p=x.index("d")
x[p]="e"
if "e" in x:
def nahrazeni_e():
for znak in x:
if znak=="e":
p=x.index("e")
x[p]="f"
if "f" in x:
def nahrazeni_f():
for znak in x:
if znak=="f":
p=x.index("f")
x[p]="g"
if "g" in x:
def nahrazeni_g():
for znak in x:
if znak=="g":
p=x.index("g")
x[p]="h"
if "h" in x:
def nahrazeni_h():
for znak in x:
if znak=="h":
p=x.index("h")
x[p]="i"
if "i" in x:
def nahrazeni_i():
for znak in x:
if znak=="i":
p=x.index("i")
x[p]="j"
if "j" in x:
def nahrazeni_j():
for znak in x:
if znak=="j":
p=x.index("j")
x[p]="k"
if "k" in x:
def nahrazeni_k():
for znak in x:
if znak=="k":
p=x.index("k")
x[p]="l"
if "l" in x:
def nahrazeni_l():
for znak in x:
if znak=="l":
p=x.index("l")
x[p]="m"
if "m" in x:
def nahrazeni_m():
for znak in x:
if znak=="m":
p=x.index("m")
x[p]="n"
if "n" in x:
def nahrazeni_n():
for znak in x:
if znak=="n":
p=x.index("n")
x[p]="o"
if "o" in x:
def nahrazeni_o():
for znak in x:
if znak=="o":
p=x.index("o")
x[p]="p"
if "p" in x:
def nahrazeni_p():
for znak in x:
if znak=="p":
p=x.index("p")
x[p]="q"
if "q" in x:
def nahrazeni_q():
for znak in x:
if znak=="q":
p=x.index("q")
x[p]="r"
if "r" in x:
def nahrazeni_r():
for znak in x:
if znak=="r":
p=x.index("r")
x[p]="s"
if "s" in x:
def nahrazeni_s():
for znak in x:
if znak=="s":
p=x.index("s")
x[p]="t"
if "t" in x:
def nahrazeni_t():
for znak in x:
if znak=="t":
p=x.index("t")
x[p]="u"
if "u" in x:
def nahrazeni_u():
for znak in x:
if znak=="u":
p=x.index("u")
x[p]="v"
if "v" in x:
def nahrazeni_v():
for znak in x:
if znak=="v":
p=x.index("v")
x[p]="w"
if "w" in x:
def nahrazeni_w():
for znak in x:
if znak=="w":
p=x.index("a")
x[p]="x"
if "x" in x:
def nahrazeni_x():
for znak in x:
if znak=="x":
p=x.index("x")
x[p]="y"
if "y" in x:
def nahrazeni_y():
for znak in x:
if znak=="y":
p=x.index("y")
x[p]="z"
if "z" in x:
def nahrazeni_z():
for znak in x:
if znak=="z":
p=x.index("z")
x[p]="a"
nahrazeni_a()
nahrazeni_b()
nahrazeni_c()
nahrazeni_d()
nahrazeni_e()
nahrazeni_f()
nahrazeni_g()
nahrazeni_h()
nahrazeni_i()
nahrazeni_j()
nahrazeni_k()
nahrazeni_l()
nahrazeni_m()
nahrazeni_n()
nahrazeni_o()
nahrazeni_p()
nahrazeni_q()
nahrazeni_r()
nahrazeni_s()
nahrazeni_t()
nahrazeni_u()
nahrazeni_v()
nahrazeni_w()
nahrazeni_x()
nahrazeni_y()
nahrazeni_z()
print x
je to program který přeměňuje text na jíný předem definovaný, ale nevím proč mi to hlásí že nahrazeni_b není nefinováno a tak dále