[Python skills]

Variable exchange

a,b = 3,7
print(a,b)
a,b = b,a
print(a,b)

Numerical comparison

a = 5
if 1 < a < 10:
    print("Yes")
else:
    print("No")

a = 5
print("Yes" if 1 < a < 10 else "No")

Print N times

print("$" * 10)

Initialize the value of the list

l = [0] * 5
print(l)

Traversal sequence

color = ["red","green","blus","yellow"]
for i in color:
    print(i)

Unfold sequence

color = ["red","green","blus","yellow"]
color1,color2,color3,color4 = color
print(color1)
print(color2)
print(color3)
print(color4)

String conversion list

s = "I Love You"
l = s.split()
print(l)

List conversion string

l = ["I","Love","You"]
s = " ".join(l)
print(s)

Convert a list of numeric strings to an integer list

l = ["23","83749","432"]
new_l = list(map(int,l));
print(new_l)

Iterate over two lists simultaneously

name = ["张三","李四","王二","麻子"]
age = [12,34,45,76]
for x,y in zip(name,age):
    print("%s%d岁"%(x,y))