So I'm trying to append list value to another one by turns. This is my code: lis1 = [1, 2, 3, 4, 5] lis2 = [6, 7, 8, 9, 10] for i, value in enumerate(lis2):   lis1.append(i) print(lis1)  My expected output is [1, 6, 2, 7, 3, 8, 4, 9, 5, 10] But what I got is [1, 2, 3, 4, 5, 0, 1, 2, 3, 4] Any help would be appreciated
What's the difference between the list methods append() and extend()?
Where's the Rainbow Jetpack gone in Jetpack Joyride? Is there an off/disable control anywhere? I realize that the INFO button toggles it off, but it comes right back on as soon as you tap the shutter, and that it a problem in low light situations where the LCD keeps blasting me in the eye. Sum of indepedent random variables and a constant Can ovulation and menstruation occur simultaneously? Is that possible that ovulation happens in the time of actual menstrual haemorrhage in human females - let say in a case that woman has 21 day cycle and her menstrual period is 7 days?   If yes, does it means that in this particular case the woman has lower chances to conceive? I wonder about the foundations of set theory and my question can be stated in some related forms:   If we base Zermelo–Fraenkel set theory on first order logic, does that mean first order logic is not allowed to contain the notion of sets? The axioms of Zermelo–Fraenkel set theory seem to already expect the notion of a set to be defined. Is there are pre-definition of what we are dealing with? And where? In set theory, if a function is defined as a set using tuples, why or how does first order logic and the axioms of Zermelo–Fraenkel set theory contain parameter dependend properties $\psi(u_1,u_2,q,...)$, which basically are functions? Where did dedicated.abac.net. come from in my rDNS and PTR records? How to stop a script from running if it's not root (and echo "Not running as root! Exiting...") t-test for partially paired and partially unpaired data An investigator wishes to produce a combined analysis of several datasets.  In some datasets there are paired observations for treatment A and B.  In others there are unpaired A and/or B data.  I am looking for a reference for an adaptation of the t-test, or for a likelihood ratio test, for such partially paired data.  I am willing to (for now) to assume normality with equal variance and that the population means for A are the same for each study (and likewise for B). Invalid field count when uploading CSV to a data extension I tried uploading non-English text to my Data Extensions but the system is throwing error named &quot;Invalid Field Count&quot;. Ubuntu files worthless on Windows? Every time i publish a new post i want to display an icon like a badge (NEW) and after a specific time it will disappear.  Lets say i publish a new post and i want to display that it is a new post. So i want to insert an icon that for example a star, in each new post in the blog list view into the metadata of the posts. Also i want to be removed after a specific time will pass. Lets say in one day or 24 hours the icon should be removed automatically.  How can i do this? For , his accounts tab shows three entries for "Database Administrators". It's the same account listed three times: How to effectively close a page? What is the lowest level of mathematics required in order to understand how encryption algorithms work? Catalan numbers and triangulation Assume $C_n$ is the number of triangulations of a polygon with $n+2$ sides. Using a combinatorial proof, show that $(4n+2)C_n=(n+2)C_{n+1}$.  I don't even know where to start with this one. I understand the triangulation after doing some googling, but I don't know where to go from here to prove the above using just a combinatorial formula. How do I disable "you need to format this disk" message in Windows Vista/7? I've started using TrueCrypt to encrypt a partition on an external USB hard drive. I've opted for using a raw partition as opposed to a file container.  But here's the annoyance. Whenever I connect this drive to a computer running Vista or Windows 7, I get the message popup "You need to format the disk in drive J: before you can use it".   The default option is "Format disk", and I'm afraid one of these days I'll accidentally trigger it.  Is there any way to disable this message? How do I make a bootable USB from Windows? Suppose $\displaystyle a_n=\frac{1}{(\text{log}2)^p+(\text{log3})^p+...+(\text{log}n)^p}$ for $n\geq 2$ and $p&gt;0$. For which values of $p$ does $\sum_{n=2}^\infty a_n$ converge?  So, when $p\leq 1$, $\displaystyle a_n\geq \frac{1}{(n-1)(\text{log}n)^p}$ for $n\geq 2$. Let $\displaystyle b_n=\frac{1}{(n-1)(\text{log}n)^p}$. Then $\sum b_n$ diverges since $p\leq 1$. Therefore by comparison test $\sum a_n$ diverges when $p\leq 1$.  When $p&gt;1$, $\displaystyle a_n\leq \frac{1}{(\text{log}n)^p}$. Let $\displaystyle c_n= \frac{1}{(\text{log}n)^p}$. If $\sum c_n$ converges then I will win. But now I am stuck. Is $\sum c_n$ converges? Then how can I prove it? If not how can I conclude the state of convergence of $\sum a_n$ for $p&gt;1$?   Can anybody please help? How can I contribute to Ubuntu? I would like to know what kinds of contributions someone can make to Ubuntu. Such as Programmer, User, Proofreader, etc. Resolve build errors due to circular dependency amongst classes