I'm trying to add an if statement in add_resource of troposphere, but I can't. Is there any workaround to do so? s3_bucket = t.add_resource(Bucket(     &quot;MyBucket&quot;,     if 2&gt;1:        BucketName=&quot;bucket1&quot;,     else:        BucketName=&quot;bucket2&quot;,     CorsConfiguration=CorsConfiguration(         &quot;CorsConfiguration&quot;,         CorsRules=[CorsRules(             &quot;AllowOrganization&quot;,             AllowedMethods=[&quot;GET&quot;],             AllowedOrigins=[&quot;*&quot;],         )]     ),     Tags=Tags(         Environment=&quot;aa&quot;,     ) ))  Edit: I tried to use ternary operators as well, but it didn't work. BucketName= if 2 &gt; 1: &quot;bucket2&quot; else: &quot;bucket3&quot;,
If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs?
If $G$ is a finite $p$-group with a nontrivial normal subgroup $H$, then the intersection of $H$ and the center of $G$ is not trivial. How to get a list of applications installed in Ubuntu dash? In Gnome, we have applications grouped up based on their type (like - games, accessories, et al). But in Unity, we need to manually type in the Unity to get the App.  Is there any keyword/utility to display the applications in GUI?  Ubuntu Version : 14.04 Hardware : Dell Inspiron 3437 What is the antiderivative of $e^{-x^2}$ I was wondering what the antiderivative of $e^{-x^2}$ was, and when I wolfram alpha'd it I got $$\displaystyle \int e^{-x^2} \textrm{d}x = \dfrac{1}{2} \sqrt{\pi} \space  \text{erf} (x) + C$$  So, I of course didn't know what this $\text{erf}$ was and I looked it up on wikipedia, where it was defined as:   $$ \text{erf}(x) = \dfrac{2}{\sqrt{\pi}} \displaystyle \int_0^x e^{-t^2} \textrm{d}t $$   To my mathematically illiterate mind, this is a bit too circular to understand. Why can't we express $\int e^{-x^2} \textrm{d}x$ as a 'normal function'? Also, what is the use of the error function? Where do AirDrop files go when I transfer them between an iPad, iPhone and iPod? I AirDropped some Google Docs from my iPad to my iPhone but nothing happened; where did my files go? The file was a list of tools. Is there a combination of "LIKE" and "IN" in SQL? New Google SEO benefit with SSL - with only a few sections in SSL, or always on? Convergence of exponential Brownian martingale to zero almost surely Define the exponential Brownian martingale as $N_t = \exp\left\{a W_t - \frac12 a^2 t \right\}$ which is a martingale with respect to the natural filtration of $W$ which stands for a standard Brownian motion.  I now want to prove that $N_t \rightarrow 0$ a.s. for $t \rightarrow \infty$. As $N_t$ is a martingale it is by definition in $L^1$ hence Doob's martingale convergence theorem tells us that there exists a $N_\infty \in L^1$ such that $N_t \rightarrow N_\infty$ a.s., but how could I prove that $N_\infty \equiv 0$? Any help is greatly appreciated! How can I write a spiral symbol? How can I get a spiral like    There seems to be a spiral-like unicode codepoint:   I tried  \documentclass[varwidth=true, border=2pt]{standalone} \usepackage[ngerman]{babel}  \usepackage[utf8]{inputenc} % Color \usepackage{color} \definecolor{lightgray}{gray}{0.95}  \DeclareUnicodeCharacter{43612}{\spiral}  %document \begin{document}{\textcolor{lightgray}{a}}\spiral{\textcolor{lightgray}{b}} \end{document}   but I got  ! Undefined control sequence. l.13 ...document}{\textcolor{lightgray}{a}}\spiral                                               {\textcolor{lightgray}{b}}   edit: I know . None of the answers gave me a spiral symbol. How do I give players already enchanted Tools/Armour/Weapons Why does the amount of energy transferred depend on distance rather than time? The change in energy of an object can be determined by the work equation, where work is the change in energy:  $$ W = F \cdot d $$  I conceptualize the transfer of energy as simply a series of small "packets" of energy being transferred at every Planck length. These small "packets" of energy add up to the total energy transferred (i.e. work). I'm not sure if this conceptualization is correct, so correct me if I am wrong.  However, it makes me wonder why the amount of energy transferred is dependent on distance and not time.  $$ m_1 = 10~kg \\ m_2 = 20~kg \\ W_1 = (10~N)\cdot(5~m) = 50~J \\ W_2 = (10~N)\cdot(5~m) = 50~J \\ W_1 = W_2 \\ t_1 \neq t_2 $$  If I apply a constant force on an object, why isn't the energy transferred at a constant rate with respect to time? The energy transfer rate varies dependent on how long it takes to cover the set distance.  In other words: why is the energy transferred consistent per unit of distance, and not per unit of time? Many times I have read statements like, "the age of the universe is 14 billion years" . For example this wikipedia page .   Now, my question is, which observers' are these time intervals? According to whom 14 billion years? Restore main APFS container to full disk Where To start Learning With Salesforce Development When do I use a dot, arrow, or double colon to refer to members of a class in C++? How come I can't give more than 500 rep? Why can't I give more than 500 reputation as a bounty at a time? The system won't let me choose an option more than 500.  Also, how were some users able to do so? On  the OP has given a single bounty worth 550 rep, but at the moment I have 844 rep and I can't give any more than 500 rep on a bounty.  Can you please tell us if this is a bug or not? Canonical map $R/(I\cap J)\rightarrow R/I\times _{R/(I+J)} R/J$ is an isomorphism Can I visit the USA as a VWP tourist immediately prior to entry on non-tourist visa? Here's my situation: I'm a UK citizen. I have an H-1B visa to work in the US as of 1 August. I also have a valid ESTA.  I would like to go to the US in July for a holiday, immediately prior to beginning my work. The holiday would be at the other end of the country from my work.  I can't enter with the H-1B as I can only enter the US on that visa 10 days prior to starting work.  Specific question: Would it be possible to visit the US in early July on the VWP, visit Canada/Mexico for a few days in late July, and re-enter the US with my H-1B visa?  General question: Is it possible to visit the US on the VWP, leave briefly, and re-enter on a different status (e.g. H, F, J, K, etc), without ever returning to one's home country?  I have posted this in Travel rather than Expatriates because, although in my specific case I have an H-1B visa, my question is more generally about VWP and travel, and I believe that it is applicable to travellers with non-immigrant visas.  There's a similar question , although that's about going to the US and before having the H-1B visa. We're trying to debug some applications performing broadcast.  What is the difference between the broadcast address 255.255.255.255 and as e.g. reported by ifconfig,  Bcast:192.168.1.255 What species of insect is this? I saw this insect near a beach in Corsica France: How to detect the presence of URL in a string