{"id":126863,"date":"2022-07-31T17:38:45","date_gmt":"2022-07-31T17:38:45","guid":{"rendered":"https:\/\/blog.finxter.com\/?p=528311"},"modified":"2022-07-31T17:38:45","modified_gmt":"2022-07-31T17:38:45","slug":"for-loop-with-two-variables-for-i-j-in-python","status":"publish","type":"post","link":"https:\/\/sickgaming.net\/blog\/2022\/07\/31\/for-loop-with-two-variables-for-i-j-in-python\/","title":{"rendered":"For Loop with Two Variables (for i j in python)"},"content":{"rendered":"\n
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5\/5 – (1 vote) <\/div>\n<\/div>\n

for i j in python<\/h2>\n

The Python expression for i, j in XXX<\/code> allows you to iterate over an iterable<\/a> XXX<\/code> of pairs of values. For example, to iterate over a list of tuples, this expression captures both tuple<\/a> values in the loop variables i<\/code> and j<\/code> at once in each iteration. <\/p>\n

Here’s an example:<\/p>\n

for i, j in [('Alice', 18), ('Bob', 22)]: print(i, 'is', j, 'years old')<\/pre>\n
Output:<\/p>\n
Alice is 18 years old\nBob is 22 years old<\/pre>\n
Notice how the first loop iteration captures i='Alice'<\/code> and j=18<\/code>, whereas the second loop iteration captures i='Bob'<\/code> and j=22<\/code>. <\/p>\n
for i j in enumerate python<\/h2>\n
The Python expression for i, j in enumerate(iterable)<\/code> allows you to loop over an iterable using variable i<\/code> as a counter (0, 1, 2, …) and variable j<\/code> to capture the iterable elements.<\/p>\n
Here’s an example where we assign the counter values i=0,1,2<\/code> to the three elements in lst<\/code>:<\/p>\n
lst = ['Alice', 'Bob', 'Carl']\nfor i, j in enumerate(lst): print(i, j)\n<\/pre>\n
Output:<\/p>\n
0 Alice\n1 Bob\n2 Carl<\/pre>\n
Notice how the loop iteration capture:<\/p>\n