CODEWITHSUNDEEP
pythonvariablesif-statementrange
user2984887
user2984887

Reputation:

Test for variables with same range

is there a way to test multiple variables within the same range (x1,y1,x2,y2 in range...)? I would like the code to be shorter after the if

mouv="7647"
x1,y1,x2,y2=int(mouv[0]),int(mouv[1]),int(mouv[2]),int(mouv[3])
if len(mouv)==4 and x1 in range(8) and y1 in range(8) and x2 in range(8) and y2 in range(8):
    print("code ok")

Upvotes: 1

Views: 73

Answers (2)

user2555451
user2555451

Reputation:

Here is a way using all:

mouv = "7647"
# I cleaned this up too
x1,y1,x2,y2 = map(int, mouv[:4])
if len(mouv)==4 and all(z in range(8) for z in (x1, y1, x2, y2)):
    print("code ok")

Note that if your range is huge, you should use Python's mathematical operators instead:

if len(mouv)==4 and all(-1 < z < 8 for z in (x1, y1, x2, y2)):

With large ranges, using mathematical operators is faster than doing x in range(n). With small ranges however, the difference is negligible.

Upvotes: 1

Ashwini Chaudhary
Ashwini Chaudhary

Reputation: 251136

Use all:

if len(muov) == 4 and all(int(x) in range(8) for x in mouv)

Or if range is huge then it's better to use chained comparison operators as range creates a list in memory and is slow compared to simple mathematical comparisons:

if len(muov) == 4 and all(0 <= int(x) < 8 for x in mouv)

Upvotes: 2

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