Update Python version from 3.6 to 3.7.

Author: carlosperate

.travis.yml

@@ -32,15 +32,15 @@ script:
   - cd "$PROJECT_DIR"
   - du -sk python/
   - cd python
-  - otool -L bin/python3.6
-  - cp ./bin/python3.6 ./bin/python3
+  - otool -L bin/python3.7
+  - cp ./bin/python3.7 ./bin/python3
   - ./bin/python3 -c 'import ssl; print(ssl.OPENSSL_VERSION)'
   - ./bin/python3 -m pip --version
 
   # Reduce stand-alone Python and upload it
   - cd "$PROJECT_DIR"
   - python process_python_build.py "$PROJECT_DIR/python"
-  - echo "Python 3.6.5" >> ./python/version.txt
+  - echo "Python 3.7.5" >> ./python/version.txt
   - tar czf upload/python3-reduced.tar.gz python/
   - curl --upload-file ./upload/python3-reduced.tar.gz https://transfer.sh/python3-reduced.tar.gz | tee -a output_urls.txt && echo "" >> output_urls.txt
 

build_python.sh

@@ -1,7 +1,10 @@
 #!/bin/sh
+set -e
 
 alias large_echo='{ set +x; } 2> /dev/null; f(){ echo "#\n#\n# $1\n#\n#"; set -x; }; f'
 
+PY_VER=3.7.5
+
 large_echo "Check OpenSSL installation path and CWD"
 if brew ls --versions openssl > /dev/null; then
     OPENSSL_ROOT="$(brew --prefix openssl)"
@@ -13,12 +16,12 @@ fi
 CURRENT_DIR="$PWD"
 echo $CURRENT_DIR
 
-large_echo "Download and uncompress Python source"
-wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz
-tar -zxvf Python-3.6.5.tgz &> /dev/null
+large_echo "Download and uncompress Python $PY_VER source"
+wget "https://www.python.org/ftp/python/$PY_VER/Python-$PY_VER.tgz"
+tar -zxvf "Python-$PY_VER.tgz" &> /dev/null
 
-cd Python-3.6.5
+cd "Python-$PY_VER"
 large_echo "Configure Python"
-./configure MACOSX_DEPLOYMENT_TARGET=10.9 CPPFLAGS="-I$OPENSSL_ROOT/include" LDFLAGS="-L$OPENSSL_ROOT/lib" --prefix="$CURRENT_DIR/python"
+./configure MACOSX_DEPLOYMENT_TARGET=10.11 CPPFLAGS="-I$OPENSSL_ROOT/include" LDFLAGS="-L$OPENSSL_ROOT/lib" --prefix="$CURRENT_DIR/python"
 large_echo "Build Python"
 make altinstall

process_python_build.py

@@ -13,7 +13,7 @@
 VERBOSE = False
 
 # Python version is used for folder names and exec files in built output
-VERSION_STR = '3.6'
+VERSION_STR = '3.7'
 PYTHON_VER = 'python{}'.format(VERSION_STR)
 
 # Set the files and directories we can remove from a Python build folder