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Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f.readline()[:-1] Have searched on here on S.O. and on Google but to no avail. Would love an explanation!
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BetaThis is explained nicely in Understanding slice notation, in the Python docs under "extended slicing", and in this blogpost: Python Slice Examples: Start, Stop and Step Share Improve this answer
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
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BetaHere, we specify a start of index 2, no end, and a step of -1. Slicing here will start from index 2 which is 3. The negative steps mean the next value in the slice will be at an index smaller than the previous index by 1. This means 2 - 1 which is 1 so the value at this index, which is 2 will be added to the slice.
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Vaše iskanje in ta rezultat
- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaRole of slicing in Python. In simpler words, a slice means to cut something. It allows dicing a list in python. Here, how slicing is important in Python: ... Example of 1 in Python. Slicing or indexing can be employed to extract a smaller list from a more extensive list. Similarly, it can be used to extract a substring from a larger string.
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaTo get the same result , you cannot fill out all three, you can put <start> as len(a)-1, but there is no <stop> index you can put to get the first element. Example - a[len(a)-1::-1].This is because <stop> index is exclusive, that is the element at that index is not taken in, also -1 means the last element , so there is no index that can be used to include the first element , other than leaving ...
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaDiscover the functionality and purpose of the 'do' statement in Python programming. Learn how it can be utilized effectively in your code. ... step] # slicing from 1st to last in steps of 1 in reverse order arr[::-1] Remember, negative number for step means "in reverse order". Let us now see examples ?
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaSets each bit to 1 if both bits are 1: x & y: Try it » | OR: Sets each bit to 1 if one of two bits is 1: x | y: Try it » ^ XOR: Sets each bit to 1 if only one of two bits is 1: x ^ y: Try it » ~ NOT: Inverts all the bits ~x: Try it » << Zero fill left shift: Shift left by pushing zeros in from the right and let the leftmost bits fall off: x ...
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaPython Comparison Operators. Comparison operators are used to compare two values.They return a Boolean value (True or False) based on the comparison result.These operators are often used in conjunction with if/else statements in order to control the flow of a program. For example, the code block below allows the user to select an option from a menu:
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaIf you leave slots empty, there's a default. [:] means: The whole thing. [::1] means: Start at the beginning, end when it ends, walk in steps of 1 (which is the default, so you don't even need to write it). [::-1] means: Start at the end (the minus does that for you), end when nothing's left and walk backwards by 1. ... In Python, the syntax ...
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- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
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BetaOkay, let us see what the above code does! we assigned the string “apple” to the variable str1 and the string “banana” to the string str2.; In line 3 above we are checking if variables str1 and str2 are equal and as expected the python interpreter prints out False.; In line 5 we have reassigned the variable str2 to “apple” and we are doing the same equality check once more.
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Vaše iskanje in ta rezultat
- Ta iskalni izraz se pojavi v rezultatu: 1 in python means
- Spletna stran se ujema z enim ali več vašimi iskalnimi izrazi
- Druge spletne strani, ki vključujejo vaše iskalne izraze, povezujejo na ta rezultat
- Rezultat je v jeziku slovenščina
