Created
March 30, 2019 12:03
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Pyladies NTK lekce 04: while, funkce
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def opakuj_hlasku(hlaska, kolikrat=3): | |
for opakovani in range(kolikrat): | |
print(hlaska) | |
# parametry se do funkce predavaji ve stejnem poradi jako v jeji definici | |
opakuj_hlasku('ahoj', 4) | |
# pokud jsou v jinem poradi, musime rict, ktery je ktery | |
opakuj_hlasku(kolikrat=5, hlaska='no nazdar') | |
# parametr kolikrat ma v definici vychozi hodnotu 3, takze ho nemusime zadavat | |
# hlaska se v tom pripade vytiskne 3x | |
opakuj_hlasku('cau pyladies') | |
# ale tohle uz fungovat nebude, nejakou hlasku zadat musime | |
opakuj_hlasku() |
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def preved_uzly(rychlost_uzly): # hlavicka funkce: def, nazev, vstupni parametry | |
"Tato funkce prevadi rychlost v uzlech na km/h." # strucny popis | |
rychlost_kmh = rychlost_uzly * 1.852 | |
return rychlost_kmh # navratova hodnota - co se dostane z funkce ven | |
def vypis_silu_vetru(rychlost_kmh): # tato funkce pouze vypisuje, nic nevraci | |
"Tato funkce vypise, jak silny je vitr o zadane rychlosti (v km/h)." | |
print('Zadana rychlost v km/h:', rychlost_kmh) | |
if rychlost_kmh < 1: | |
print('Vubec nefouka.') | |
elif rychlost_kmh < 25: | |
print('Trochu fouka.') | |
elif rychlost_kmh < 65: | |
print('To je ficak!') | |
else: | |
print('Vichrice!!') | |
# uz tohle je vlastne volani dvou funkci: int, input | |
vstup = int(input('Zadej rychlost vetru v uzlech: ')) | |
vstup_kmh = preved_uzly(vstup) | |
vypis_silu_vetru(vstup_kmh) | |
# da se zkombinovat i na jednom radku: | |
vypis_silu_vetru(preved_uzly(vstup)) | |
print(20 * '-') | |
print('Ukazka vracenych hodnot:') | |
x = preved_uzly(5) | |
y = vypis_silu_vetru(x) | |
print('Prvni funkce vraci', x) # cislo | |
print('Druha funkce vraci', y) # None, protoze nevraci nic jineho prikazem return |
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nejmensi = int(input('Zadej cislo: ')) # prvni zadane cislo je zatim nejmensi | |
for i in range(4): | |
cislo = int(input('Zadej cislo: ')) | |
if cislo < nejmensi: # kdyz je nove cislo mensi | |
nejmensi = cislo # prepis promennou nejmensi | |
print(nejmensi) |
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from turtle import forward, left, speed, exitonclick | |
speed('fastest') | |
# kolecko | |
for krok in range(360): | |
forward(1) | |
left(1) | |
forward(200) | |
# spirala | |
for i in range(360): | |
forward(i/15) | |
left(15) | |
forward(200) | |
# listek = 2 x ctvrtkolecko | |
for cara in range(2): | |
for krok in range(90): | |
forward(1) | |
left(1) | |
left(90) | |
exitonclick() |
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# pocitac si vylosuje nahodne cislo a uzivatel jej pak ma uhodnout, | |
# pocitac mu napovida, kterym smerem posunout svuj odhad | |
from random import randrange | |
horni_mez = 101 | |
cislo = randrange(horni_mez) | |
#print(cislo) # jen pro testovaci ucely! :) | |
print('Hadej cislo od nuly do', horni_mez-1) | |
while True: | |
tip = int(input('Tvuj tip? ')) # pozor, vstup je potreba prevest na int | |
if tip > cislo: # protoze nelze takto porovnavat str a int | |
print('To je moc! Uber.') | |
elif tip < cislo: | |
print('To je malo! Pridej.') | |
else: # kdyz neni mensi ani vetsi, tak to musi byt ono | |
print('Spravne!') | |
break |
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heslo = input('Zadej heslo: ') | |
while heslo != 'pyladies': # pokud je splnena podminka (heslo neni pyladies), | |
print('To neni spravne.') # program vstoupi do cyklu | |
heslo = input('Zadej heslo: ') # odsud se vraci na zacatek ke kontrole podminky | |
print('Spravne!') # pokud podminka neplati, program pokracuje dal | |
print('A jeste jednou: ') | |
# druha varianta while | |
while True: # tato podminka plati vzdy | |
heslo = input('Zadej znovu heslo: ') | |
if heslo == 'pyladies': | |
print('Spravne!') | |
break # takze nekde musi byt cesta ven z cyklu | |
print('To neni dobre.') | |
print('Konec programu.') |
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