CODEWITHSUNDEEP
pythonarrayslistif-statement
Falco Peregrinus
Falco Peregrinus

Reputation: 587

Python array elements in if statement

I have some array with integers, and for loop. I am trying to test if some specific elements in array is bigger or smaller that some integer. This code explain it better:

array = [1,2,3,4,5]
for i in range(5):
    if array[i] >= 3:
        print(sometext)
    else:
        print(othertext)

But i got an ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

SOLUTION: I did indent it properly. This above is just simplification(some stupid example) of my code. I found where the error is. It is because I initialized array with numpy as

a = numpy.empty(5) and not like this:

a = [0 for i in range(5)]

Thank you everybody for your help

Upvotes: 5

Views: 62448

Answers (5)

Finn Ledlin
Finn Ledlin

Reputation: 1

I gave this a go

array = [1,2,3,4,5]

x1 = (array[0])
x2= (array[1])
x3= (array[2])
x4= (array[3])
x5= (array[4])


if x1 <= x2:
  print("very good")
else:
  print("also good")

how's that?

Upvotes: 0

tbobm
tbobm

Reputation: 123

This isn't really the most pythoninc way of doing what you're describing.

array = [1,2,3,4,5]
for element in array:
    if element >= 3:
        print("Yes")
    else:
        print("No")

Reference: https://wiki.python.org/moin/ForLoop

Upvotes: 0

Chandra Shekhar
Chandra Shekhar

Reputation: 617

The Error that you are getting is basically due to INDENTATION . Python strictly follows indentation , meaning that it will only execute codes written in that specific Block . Refer Python Indentation Rule for more details. Thank You. Happy Coding Ahead.

Upvotes: 0

Anand.G.T
Anand.G.T

Reputation: 61

It worked for me with proper intendations:

>>> array = [1,2,3,4,5]
>>> for i in range(5):
...     if array[i] >= 3:
...             print("Yes")
...     else:
...             print("No")
...

Upvotes: 2

Gabriel
Gabriel

Reputation: 1942

You should iterate over the array itself:

array = [1, 2, 3, 4, 5]

for item in array:
    if item >= 3:
        print("yes")
    else:
        print("no")

Upvotes: 4

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