Cola Rápida de Python: Comandos e Macetes

print("Olá!")

# o Python ignora esta linha

idade = 25

print(f"Olá, {nome}!")

7 + 2   7 - 2   7 * 2   7 / 2   7 // 2   7 % 2   7 ** 2

type(3.14)   # float
type("oi")   # str

int("5")   float("2.5")   str(42)

round(3.14159, 2)   # 3.14

len("Python")   # 6

if nota >= 9:
    print("A")
elif nota >= 6:
    print("B")
else:
    print("C")

==   !=   <   >   <=   >=

idade >= 18 and tem_ingresso
chuva or vento
not logado

for i in range(5):
    print(i)   # 0 1 2 3 4

n = 3
while n > 0:
    n -= 1

for n in lista:
    if n == 0:
        continue   # pula
    if n < 0:
        break      # sai

l = [10, 20, 30]
l[0]    # 10
l[-1]   # 30

l.append(40)
l.remove(10)
len(l)
sorted(l)

l[1:3]   # itens 1 e 2

d = {"nome": "Ana", "idade": 30}
d["nome"]
d.get("cidade", "?")

for chave, valor in d.items():
    print(chave, valor)

[x * 2 for x in l if x > 10]

def dobro(x):
    return x * 2

try:
    n = int(texto)
except ValueError:
    print("Não é número")

import math
math.sqrt(9)

class Conta:
    def __init__(self, saldo):
        self.saldo = saldo

# Beautiful is better than ugly.

# Explicit is better than implicit.

# Simple is better than complex.

# Readability counts.

# Errors should never pass silently.

# If the implementation is hard to explain, it's a bad idea.